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Finding the Fourth Proportional to 135,603.19, 187,119.80 and 75,168.71

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Solution

The fourth proportional to 135,603.19, 187,119.80 and 75,168.71 is: 103,725.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,603.19 : 187,119.80 = 75,168.71 : x
  2. Step 2: Convert to fraction form
    135,603.19/187,119.80 = 75,168.71/x
  3. Step 3: Cross multiply
    135,603.19x = 187,119.80 × 75,168.71
  4. Step 4: Simplify right side
    135,603.19x = 14,065,553,442.19
  5. Step 5: Solve for x
    x = 14,065,553,442.19/135,603.19
  6. Step 6: Final answer
    x = 103,725.83

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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.