Home / 145,157.13-217,761.21-66,279.33

Finding the Fourth Proportional to 145,157.13, 217,761.21 and 66,279.33

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Solution

The fourth proportional to 145,157.13, 217,761.21 and 66,279.33 is: 99,430.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,157.13 : 217,761.21 = 66,279.33 : x
  2. Step 2: Convert to fraction form
    145,157.13/217,761.21 = 66,279.33/x
  3. Step 3: Cross multiply
    145,157.13x = 217,761.21 × 66,279.33
  4. Step 4: Simplify right side
    145,157.13x = 14,433,067,098.79
  5. Step 5: Solve for x
    x = 14,433,067,098.79/145,157.13
  6. Step 6: Final answer
    x = 99,430.65

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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.