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Finding the Fourth Proportional to 99,553.80, 148,898.70 and 89,099.40

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Solution

The fourth proportional to 99,553.80, 148,898.70 and 89,099.40 is: 133,262.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,553.80 : 148,898.70 = 89,099.40 : x
  2. Step 2: Convert to fraction form
    99,553.80/148,898.70 = 89,099.40/x
  3. Step 3: Cross multiply
    99,553.80x = 148,898.70 × 89,099.40
  4. Step 4: Simplify right side
    99,553.80x = 13,266,784,830.78
  5. Step 5: Solve for x
    x = 13,266,784,830.78/99,553.80
  6. Step 6: Final answer
    x = 133,262.47

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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.