Home / 113,140.99-156,117.23-65,385.13

Finding the Fourth Proportional to 113,140.99, 156,117.23 and 65,385.13

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Solution

The fourth proportional to 113,140.99, 156,117.23 and 65,385.13 is: 90,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,140.99 : 156,117.23 = 65,385.13 : x
  2. Step 2: Convert to fraction form
    113,140.99/156,117.23 = 65,385.13/x
  3. Step 3: Cross multiply
    113,140.99x = 156,117.23 × 65,385.13
  4. Step 4: Simplify right side
    113,140.99x = 10,207,744,736.64
  5. Step 5: Solve for x
    x = 10,207,744,736.64/113,140.99
  6. Step 6: Final answer
    x = 90,221.45

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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.