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Finding the Fourth Proportional to 158,855.52, 219,220.92 and 87,240.24

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Solution

The fourth proportional to 158,855.52, 219,220.92 and 87,240.24 is: 120,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,855.52 : 219,220.92 = 87,240.24 : x
  2. Step 2: Convert to fraction form
    158,855.52/219,220.92 = 87,240.24/x
  3. Step 3: Cross multiply
    158,855.52x = 219,220.92 × 87,240.24
  4. Step 4: Simplify right side
    158,855.52x = 19,124,885,673.82
  5. Step 5: Solve for x
    x = 19,124,885,673.82/158,855.52
  6. Step 6: Final answer
    x = 120,391.70

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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.