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Finding the Fourth Proportional to 158,248, 218,382.24 and 87,592

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Solution

The fourth proportional to 158,248, 218,382.24 and 87,592 is: 120,876.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,248 : 218,382.24 = 87,592 : x
  2. Step 2: Convert to fraction form
    158,248/218,382.24 = 87,592/x
  3. Step 3: Cross multiply
    158,248x = 218,382.24 × 87,592
  4. Step 4: Simplify right side
    158,248x = 19,128,537,166.08
  5. Step 5: Solve for x
    x = 19,128,537,166.08/158,248
  6. Step 6: Final answer
    x = 120,876.96

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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.