Home / 91,818.10-137,435.55-84,819.70

Finding the Fourth Proportional to 91,818.10, 137,435.55 and 84,819.70

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Solution

The fourth proportional to 91,818.10, 137,435.55 and 84,819.70 is: 126,960.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,818.10 : 137,435.55 = 84,819.70 : x
  2. Step 2: Convert to fraction form
    91,818.10/137,435.55 = 84,819.70/x
  3. Step 3: Cross multiply
    91,818.10x = 137,435.55 × 84,819.70
  4. Step 4: Simplify right side
    91,818.10x = 11,657,242,120.34
  5. Step 5: Solve for x
    x = 11,657,242,120.34/91,818.10
  6. Step 6: Final answer
    x = 126,960.18

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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.