Home / 135,084.20-186,419.94-74,658.74

Finding the Fourth Proportional to 135,084.20, 186,419.94 and 74,658.74

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Solution

The fourth proportional to 135,084.20, 186,419.94 and 74,658.74 is: 103,031.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,084.20 : 186,419.94 = 74,658.74 : x
  2. Step 2: Convert to fraction form
    135,084.20/186,419.94 = 74,658.74/x
  3. Step 3: Cross multiply
    135,084.20x = 186,419.94 × 74,658.74
  4. Step 4: Simplify right side
    135,084.20x = 13,917,877,831.28
  5. Step 5: Solve for x
    x = 13,917,877,831.28/135,084.20
  6. Step 6: Final answer
    x = 103,031.13

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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.