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Finding the Fourth Proportional to 155,882.01, 215,118.17 and 84,261.87

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Solution

The fourth proportional to 155,882.01, 215,118.17 and 84,261.87 is: 116,281.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,882.01 : 215,118.17 = 84,261.87 : x
  2. Step 2: Convert to fraction form
    155,882.01/215,118.17 = 84,261.87/x
  3. Step 3: Cross multiply
    155,882.01x = 215,118.17 × 84,261.87
  4. Step 4: Simplify right side
    155,882.01x = 18,126,258,853.87
  5. Step 5: Solve for x
    x = 18,126,258,853.87/155,882.01
  6. Step 6: Final answer
    x = 116,281.92

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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.