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Finding the Fourth Proportional to 101,421.56, 152,179.76 and 45,255.76

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Solution

The fourth proportional to 101,421.56, 152,179.76 and 45,255.76 is: 67,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,421.56 : 152,179.76 = 45,255.76 : x
  2. Step 2: Convert to fraction form
    101,421.56/152,179.76 = 45,255.76/x
  3. Step 3: Cross multiply
    101,421.56x = 152,179.76 × 45,255.76
  4. Step 4: Simplify right side
    101,421.56x = 6,887,010,695.42
  5. Step 5: Solve for x
    x = 6,887,010,695.42/101,421.56
  6. Step 6: Final answer
    x = 67,904.80

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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.