Home / 113,146.60-156,124.97-65,390.74

Finding the Fourth Proportional to 113,146.60, 156,124.97 and 65,390.74

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Solution

The fourth proportional to 113,146.60, 156,124.97 and 65,390.74 is: 90,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,146.60 : 156,124.97 = 65,390.74 : x
  2. Step 2: Convert to fraction form
    113,146.60/156,124.97 = 65,390.74/x
  3. Step 3: Cross multiply
    113,146.60x = 156,124.97 × 65,390.74
  4. Step 4: Simplify right side
    113,146.60x = 10,209,127,320.78
  5. Step 5: Solve for x
    x = 10,209,127,320.78/113,146.60
  6. Step 6: Final answer
    x = 90,229.20

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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.