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Finding the Fourth Proportional to 121,862.52, 182,534.58 and 71,888.76

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Solution

The fourth proportional to 121,862.52, 182,534.58 and 71,888.76 is: 107,680.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,862.52 : 182,534.58 = 71,888.76 : x
  2. Step 2: Convert to fraction form
    121,862.52/182,534.58 = 71,888.76/x
  3. Step 3: Cross multiply
    121,862.52x = 182,534.58 × 71,888.76
  4. Step 4: Simplify right side
    121,862.52x = 13,122,184,613.32
  5. Step 5: Solve for x
    x = 13,122,184,613.32/121,862.52
  6. Step 6: Final answer
    x = 107,680.23

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1.5x scale

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.