Home / 113,279.20-156,281.68-72,989.76

Finding the Fourth Proportional to 113,279.20, 156,281.68 and 72,989.76

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Solution

The fourth proportional to 113,279.20, 156,281.68 and 72,989.76 is: 100,697.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,279.20 : 156,281.68 = 72,989.76 : x
  2. Step 2: Convert to fraction form
    113,279.20/156,281.68 = 72,989.76/x
  3. Step 3: Cross multiply
    113,279.20x = 156,281.68 × 72,989.76
  4. Step 4: Simplify right side
    113,279.20x = 11,406,962,315.60
  5. Step 5: Solve for x
    x = 11,406,962,315.60/113,279.20
  6. Step 6: Final answer
    x = 100,697.77

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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.