Home / 138,128,088.38-190,610,060.02-78,583,776.62

Finding the Fourth Proportional to 138,128,088.38, 190,610,060.02 and 78,583,776.62

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Solution

The fourth proportional to 138,128,088.38, 190,610,060.02 and 78,583,776.62 is: 108,441,798.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,128,088.38 : 190,610,060.02 = 78,583,776.62 : x
  2. Step 2: Convert to fraction form
    138,128,088.38/190,610,060.02 = 78,583,776.62/x
  3. Step 3: Cross multiply
    138,128,088.38x = 190,610,060.02 × 78,583,776.62
  4. Step 4: Simplify right side
    138,128,088.38x = 14,978,858,376,986,962
  5. Step 5: Solve for x
    x = 14,978,858,376,986,962/138,128,088.38
  6. Step 6: Final answer
    x = 108,441,798.86

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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.