Home / 113,432.90-170,214.15-78,397.70

Finding the Fourth Proportional to 113,432.90, 170,214.15 and 78,397.70

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Solution

The fourth proportional to 113,432.90, 170,214.15 and 78,397.70 is: 117,641.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,432.90 : 170,214.15 = 78,397.70 : x
  2. Step 2: Convert to fraction form
    113,432.90/170,214.15 = 78,397.70/x
  3. Step 3: Cross multiply
    113,432.90x = 170,214.15 × 78,397.70
  4. Step 4: Simplify right side
    113,432.90x = 13,344,397,867.46
  5. Step 5: Solve for x
    x = 13,344,397,867.46/113,432.90
  6. Step 6: Final answer
    x = 117,641.34

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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.