Home / 138,114,661.12-190,584,666.10-76,231,013.92

Finding the Fourth Proportional to 138,114,661.12, 190,584,666.10 and 76,231,013.92

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Solution

The fourth proportional to 138,114,661.12, 190,584,666.10 and 76,231,013.92 is: 105,191,311.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,114,661.12 : 190,584,666.10 = 76,231,013.92 : x
  2. Step 2: Convert to fraction form
    138,114,661.12/190,584,666.10 = 76,231,013.92/x
  3. Step 3: Cross multiply
    138,114,661.12x = 190,584,666.10 × 76,231,013.92
  4. Step 4: Simplify right side
    138,114,661.12x = 14,528,462,334,407,652
  5. Step 5: Solve for x
    x = 14,528,462,334,407,652/138,114,661.12
  6. Step 6: Final answer
    x = 105,191,311.46

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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.