Home / 142,454.38-213,692.81-47,685.12

Finding the Fourth Proportional to 142,454.38, 213,692.81 and 47,685.12

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Solution

The fourth proportional to 142,454.38, 213,692.81 and 47,685.12 is: 71,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,454.38 : 213,692.81 = 47,685.12 : x
  2. Step 2: Convert to fraction form
    142,454.38/213,692.81 = 47,685.12/x
  3. Step 3: Cross multiply
    142,454.38x = 213,692.81 × 47,685.12
  4. Step 4: Simplify right side
    142,454.38x = 10,189,965,981.10
  5. Step 5: Solve for x
    x = 10,189,965,981.10/142,454.38
  6. Step 6: Final answer
    x = 71,531.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.