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Finding the Fourth Proportional to 147,174.62, 220,755.02 and 86,418.74

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Solution

The fourth proportional to 147,174.62, 220,755.02 and 86,418.74 is: 129,624.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,174.62 : 220,755.02 = 86,418.74 : x
  2. Step 2: Convert to fraction form
    147,174.62/220,755.02 = 86,418.74/x
  3. Step 3: Cross multiply
    147,174.62x = 220,755.02 × 86,418.74
  4. Step 4: Simplify right side
    147,174.62x = 19,077,370,796.87
  5. Step 5: Solve for x
    x = 19,077,370,796.87/147,174.62
  6. Step 6: Final answer
    x = 129,624.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.