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Finding the Fourth Proportional to 159,277.68, 219,711.78 and 99,558

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Solution

The fourth proportional to 159,277.68, 219,711.78 and 99,558 is: 137,332.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,277.68 : 219,711.78 = 99,558 : x
  2. Step 2: Convert to fraction form
    159,277.68/219,711.78 = 99,558/x
  3. Step 3: Cross multiply
    159,277.68x = 219,711.78 × 99,558
  4. Step 4: Simplify right side
    159,277.68x = 21,874,065,393.24
  5. Step 5: Solve for x
    x = 21,874,065,393.24/159,277.68
  6. Step 6: Final answer
    x = 137,332.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.