Home / 253,005,978,143.92-349,154,673,905.90-138,820,568,875.07

Finding the Fourth Proportional to 253,005,978,143.92, 349,154,673,905.90 and 138,820,568,875.07

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Solution

The fourth proportional to 253,005,978,143.92, 349,154,673,905.90 and 138,820,568,875.07 is: 191,575,909,836.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,005,978,143.92 : 349,154,673,905.90 = 138,820,568,875.07 : x
  2. Step 2: Convert to fraction form
    253,005,978,143.92/349,154,673,905.90 = 138,820,568,875.07/x
  3. Step 3: Cross multiply
    253,005,978,143.92x = 349,154,673,905.90 × 138,820,568,875.07
  4. Step 4: Simplify right side
    253,005,978,143.92x = 48,469,850,457,006,602,715,136
  5. Step 5: Solve for x
    x = 48,469,850,457,006,602,715,136/253,005,978,143.92
  6. Step 6: Final answer
    x = 191,575,909,836.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.