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Finding the Fourth Proportional to 135,740.71, 187,344.67 and 75,330.76

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Solution

The fourth proportional to 135,740.71, 187,344.67 and 75,330.76 is: 103,968.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,740.71 : 187,344.67 = 75,330.76 : x
  2. Step 2: Convert to fraction form
    135,740.71/187,344.67 = 75,330.76/x
  3. Step 3: Cross multiply
    135,740.71x = 187,344.67 × 75,330.76
  4. Step 4: Simplify right side
    135,740.71x = 14,112,816,373.05
  5. Step 5: Solve for x
    x = 14,112,816,373.05/135,740.71
  6. Step 6: Final answer
    x = 103,968.93

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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.