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Finding the Fourth Proportional to 158,853.66, 219,218.05 and 87,234.87

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Solution

The fourth proportional to 158,853.66, 219,218.05 and 87,234.87 is: 120,384.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,853.66 : 219,218.05 = 87,234.87 : x
  2. Step 2: Convert to fraction form
    158,853.66/219,218.05 = 87,234.87/x
  3. Step 3: Cross multiply
    158,853.66x = 219,218.05 × 87,234.87
  4. Step 4: Simplify right side
    158,853.66x = 19,123,458,533.82
  5. Step 5: Solve for x
    x = 19,123,458,533.82/158,853.66
  6. Step 6: Final answer
    x = 120,384.13

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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.