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Finding the Fourth Proportional to 158,897.87, 219,280.37 and 87,279.49

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Solution

The fourth proportional to 158,897.87, 219,280.37 and 87,279.49 is: 120,446.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,897.87 : 219,280.37 = 87,279.49 : x
  2. Step 2: Convert to fraction form
    158,897.87/219,280.37 = 87,279.49/x
  3. Step 3: Cross multiply
    158,897.87x = 219,280.37 × 87,279.49
  4. Step 4: Simplify right side
    158,897.87x = 19,138,678,698.31
  5. Step 5: Solve for x
    x = 19,138,678,698.31/158,897.87
  6. Step 6: Final answer
    x = 120,446.42

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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.