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Finding the Fourth Proportional to 135,612.76, 187,140.54 and 75,992.92

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Solution

The fourth proportional to 135,612.76, 187,140.54 and 75,992.92 is: 104,867.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,612.76 : 187,140.54 = 75,992.92 : x
  2. Step 2: Convert to fraction form
    135,612.76/187,140.54 = 75,992.92/x
  3. Step 3: Cross multiply
    135,612.76x = 187,140.54 × 75,992.92
  4. Step 4: Simplify right side
    135,612.76x = 14,221,356,084.98
  5. Step 5: Solve for x
    x = 14,221,356,084.98/135,612.76
  6. Step 6: Final answer
    x = 104,867.39

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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.