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Finding the Fourth Proportional to 135,480.42, 186,960.96 and 75,050.88

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Solution

The fourth proportional to 135,480.42, 186,960.96 and 75,050.88 is: 103,569.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,480.42 : 186,960.96 = 75,050.88 : x
  2. Step 2: Convert to fraction form
    135,480.42/186,960.96 = 75,050.88/x
  3. Step 3: Cross multiply
    135,480.42x = 186,960.96 × 75,050.88
  4. Step 4: Simplify right side
    135,480.42x = 14,031,584,573.64
  5. Step 5: Solve for x
    x = 14,031,584,573.64/135,480.42
  6. Step 6: Final answer
    x = 103,569.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.