Home / 113,129.85-156,110.08-65,386.29

Finding the Fourth Proportional to 113,129.85, 156,110.08 and 65,386.29

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Solution

The fourth proportional to 113,129.85, 156,110.08 and 65,386.29 is: 90,227.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,129.85 : 156,110.08 = 65,386.29 : x
  2. Step 2: Convert to fraction form
    113,129.85/156,110.08 = 65,386.29/x
  3. Step 3: Cross multiply
    113,129.85x = 156,110.08 × 65,386.29
  4. Step 4: Simplify right side
    113,129.85x = 10,207,458,962.80
  5. Step 5: Solve for x
    x = 10,207,458,962.80/113,129.85
  6. Step 6: Final answer
    x = 90,227.81

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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.