Home / 135,624.60-203,436.90-42,139.80

Finding the Fourth Proportional to 135,624.60, 203,436.90 and 42,139.80

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Solution

The fourth proportional to 135,624.60, 203,436.90 and 42,139.80 is: 63,209.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,624.60 : 203,436.90 = 42,139.80 : x
  2. Step 2: Convert to fraction form
    135,624.60/203,436.90 = 42,139.80/x
  3. Step 3: Cross multiply
    135,624.60x = 203,436.90 × 42,139.80
  4. Step 4: Simplify right side
    135,624.60x = 8,572,790,278.62
  5. Step 5: Solve for x
    x = 8,572,790,278.62/135,624.60
  6. Step 6: Final answer
    x = 63,209.70

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1.5x scale

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.