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Finding the Fourth Proportional to 159,068.52, 219,506.12 and 87,434.76

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Solution

The fourth proportional to 159,068.52, 219,506.12 and 87,434.76 is: 120,655.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,068.52 : 219,506.12 = 87,434.76 : x
  2. Step 2: Convert to fraction form
    159,068.52/219,506.12 = 87,434.76/x
  3. Step 3: Cross multiply
    159,068.52x = 219,506.12 × 87,434.76
  4. Step 4: Simplify right side
    159,068.52x = 19,192,464,920.73
  5. Step 5: Solve for x
    x = 19,192,464,920.73/159,068.52
  6. Step 6: Final answer
    x = 120,655.33

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1.5x scale

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.