Home / 145,239.30-217,552.77-66,419.82

Finding the Fourth Proportional to 145,239.30, 217,552.77 and 66,419.82

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Solution

The fourth proportional to 145,239.30, 217,552.77 and 66,419.82 is: 99,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,239.30 : 217,552.77 = 66,419.82 : x
  2. Step 2: Convert to fraction form
    145,239.30/217,552.77 = 66,419.82/x
  3. Step 3: Cross multiply
    145,239.30x = 217,552.77 × 66,419.82
  4. Step 4: Simplify right side
    145,239.30x = 14,449,815,823.90
  5. Step 5: Solve for x
    x = 14,449,815,823.90/145,239.30
  6. Step 6: Final answer
    x = 99,489.71

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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.