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Finding the Fourth Proportional to 158,737.69, 219,050.99 and 87,117.85

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Solution

The fourth proportional to 158,737.69, 219,050.99 and 87,117.85 is: 120,218.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,737.69 : 219,050.99 = 87,117.85 : x
  2. Step 2: Convert to fraction form
    158,737.69/219,050.99 = 87,117.85/x
  3. Step 3: Cross multiply
    158,737.69x = 219,050.99 × 87,117.85
  4. Step 4: Simplify right side
    158,737.69x = 19,083,250,853.58
  5. Step 5: Solve for x
    x = 19,083,250,853.58/158,737.69
  6. Step 6: Final answer
    x = 120,218.78

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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.