Home / 134,445.20-201,505.80-78,177.20

Finding the Fourth Proportional to 134,445.20, 201,505.80 and 78,177.20

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Solution

The fourth proportional to 134,445.20, 201,505.80 and 78,177.20 is: 117,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,445.20 : 201,505.80 = 78,177.20 : x
  2. Step 2: Convert to fraction form
    134,445.20/201,505.80 = 78,177.20/x
  3. Step 3: Cross multiply
    134,445.20x = 201,505.80 × 78,177.20
  4. Step 4: Simplify right side
    134,445.20x = 15,753,159,227.76
  5. Step 5: Solve for x
    x = 15,753,159,227.76/134,445.20
  6. Step 6: Final answer
    x = 117,171.60

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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.