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Finding the Fourth Proportional to 135,505.76, 203,256.80 and 42,011.52

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Solution

The fourth proportional to 135,505.76, 203,256.80 and 42,011.52 is: 63,016.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,505.76 : 203,256.80 = 42,011.52 : x
  2. Step 2: Convert to fraction form
    135,505.76/203,256.80 = 42,011.52/x
  3. Step 3: Cross multiply
    135,505.76x = 203,256.80 × 42,011.52
  4. Step 4: Simplify right side
    135,505.76x = 8,539,127,118.34
  5. Step 5: Solve for x
    x = 8,539,127,118.34/135,505.76
  6. Step 6: Final answer
    x = 63,016.71

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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.