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Finding the Fourth Proportional to 99,300.40, 148,921.80 and 40,116.40

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Solution

The fourth proportional to 99,300.40, 148,921.80 and 40,116.40 is: 60,162.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,300.40 : 148,921.80 = 40,116.40 : x
  2. Step 2: Convert to fraction form
    99,300.40/148,921.80 = 40,116.40/x
  3. Step 3: Cross multiply
    99,300.40x = 148,921.80 × 40,116.40
  4. Step 4: Simplify right side
    99,300.40x = 5,974,206,497.52
  5. Step 5: Solve for x
    x = 5,974,206,497.52/99,300.40
  6. Step 6: Final answer
    x = 60,162.97

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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.