Home / 103,217.22-142,470-67,412.79

Finding the Fourth Proportional to 103,217.22, 142,470 and 67,412.79

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Solution

The fourth proportional to 103,217.22, 142,470 and 67,412.79 is: 93,049.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,217.22 : 142,470 = 67,412.79 : x
  2. Step 2: Convert to fraction form
    103,217.22/142,470 = 67,412.79/x
  3. Step 3: Cross multiply
    103,217.22x = 142,470 × 67,412.79
  4. Step 4: Simplify right side
    103,217.22x = 9,604,300,191.30
  5. Step 5: Solve for x
    x = 9,604,300,191.30/103,217.22
  6. Step 6: Final answer
    x = 93,049.40

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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.