Home / 113,685.20-156,897.27-72,320.88

Finding the Fourth Proportional to 113,685.20, 156,897.27 and 72,320.88

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Solution

The fourth proportional to 113,685.20, 156,897.27 and 72,320.88 is: 99,810.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,685.20 : 156,897.27 = 72,320.88 : x
  2. Step 2: Convert to fraction form
    113,685.20/156,897.27 = 72,320.88/x
  3. Step 3: Cross multiply
    113,685.20x = 156,897.27 × 72,320.88
  4. Step 4: Simplify right side
    113,685.20x = 11,346,948,636.00
  5. Step 5: Solve for x
    x = 11,346,948,636.00/113,685.20
  6. Step 6: Final answer
    x = 99,810.25

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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.