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Finding the Fourth Proportional to 123,411.70, 185,117.55 and 80,601.18

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Solution

The fourth proportional to 123,411.70, 185,117.55 and 80,601.18 is: 120,901.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,411.70 : 185,117.55 = 80,601.18 : x
  2. Step 2: Convert to fraction form
    123,411.70/185,117.55 = 80,601.18/x
  3. Step 3: Cross multiply
    123,411.70x = 185,117.55 × 80,601.18
  4. Step 4: Simplify right side
    123,411.70x = 14,920,692,043.12
  5. Step 5: Solve for x
    x = 14,920,692,043.12/123,411.70
  6. Step 6: Final answer
    x = 120,901.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.