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Finding the Fourth Proportional to 113,513.70, 156,625.02 and 65,764.20

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Solution

The fourth proportional to 113,513.70, 156,625.02 and 65,764.20 is: 90,740.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,513.70 : 156,625.02 = 65,764.20 : x
  2. Step 2: Convert to fraction form
    113,513.70/156,625.02 = 65,764.20/x
  3. Step 3: Cross multiply
    113,513.70x = 156,625.02 × 65,764.20
  4. Step 4: Simplify right side
    113,513.70x = 10,300,319,140.28
  5. Step 5: Solve for x
    x = 10,300,319,140.28/113,513.70
  6. Step 6: Final answer
    x = 90,740.76

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1.5x scale

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.