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Finding the Fourth Proportional to 99,490.20, 148,870.80 and 73,246.20

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Solution

The fourth proportional to 99,490.20, 148,870.80 and 73,246.20 is: 109,600.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,490.20 : 148,870.80 = 73,246.20 : x
  2. Step 2: Convert to fraction form
    99,490.20/148,870.80 = 73,246.20/x
  3. Step 3: Cross multiply
    99,490.20x = 148,870.80 × 73,246.20
  4. Step 4: Simplify right side
    99,490.20x = 10,904,220,390.96
  5. Step 5: Solve for x
    x = 10,904,220,390.96/99,490.20
  6. Step 6: Final answer
    x = 109,600.95

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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.