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Finding the Fourth Proportional to 99,158.40, 148,737.90 and 69,708

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Solution

The fourth proportional to 99,158.40, 148,737.90 and 69,708 is: 104,562.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,158.40 : 148,737.90 = 69,708 : x
  2. Step 2: Convert to fraction form
    99,158.40/148,737.90 = 69,708/x
  3. Step 3: Cross multiply
    99,158.40x = 148,737.90 × 69,708
  4. Step 4: Simplify right side
    99,158.40x = 10,368,221,533.20
  5. Step 5: Solve for x
    x = 10,368,221,533.20/99,158.40
  6. Step 6: Final answer
    x = 104,562.21

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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.