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Finding the Fourth Proportional to 99,189.59, 148,737.48 and 38,428.32

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Solution

The fourth proportional to 99,189.59, 148,737.48 and 38,428.32 is: 57,624.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,189.59 : 148,737.48 = 38,428.32 : x
  2. Step 2: Convert to fraction form
    99,189.59/148,737.48 = 38,428.32/x
  3. Step 3: Cross multiply
    99,189.59x = 148,737.48 × 38,428.32
  4. Step 4: Simplify right side
    99,189.59x = 5,715,731,477.43
  5. Step 5: Solve for x
    x = 5,715,731,477.43/99,189.59
  6. Step 6: Final answer
    x = 57,624.31

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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.