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Finding the Fourth Proportional to 135,658.76, 187,209.08 and 75,238.62

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Solution

The fourth proportional to 135,658.76, 187,209.08 and 75,238.62 is: 103,829.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,658.76 : 187,209.08 = 75,238.62 : x
  2. Step 2: Convert to fraction form
    135,658.76/187,209.08 = 75,238.62/x
  3. Step 3: Cross multiply
    135,658.76x = 187,209.08 × 75,238.62
  4. Step 4: Simplify right side
    135,658.76x = 14,085,352,830.67
  5. Step 5: Solve for x
    x = 14,085,352,830.67/135,658.76
  6. Step 6: Final answer
    x = 103,829.29

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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.