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Finding the Fourth Proportional to 125,984.88, 188,860.60 and 70,542

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Solution

The fourth proportional to 125,984.88, 188,860.60 and 70,542 is: 105,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,984.88 : 188,860.60 = 70,542 : x
  2. Step 2: Convert to fraction form
    125,984.88/188,860.60 = 70,542/x
  3. Step 3: Cross multiply
    125,984.88x = 188,860.60 × 70,542
  4. Step 4: Simplify right side
    125,984.88x = 13,322,604,445.20
  5. Step 5: Solve for x
    x = 13,322,604,445.20/125,984.88
  6. Step 6: Final answer
    x = 105,747.65

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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.