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Finding the Fourth Proportional to 122,889.55, 169,600.34 and 75,174.65

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Solution

The fourth proportional to 122,889.55, 169,600.34 and 75,174.65 is: 103,748.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,889.55 : 169,600.34 = 75,174.65 : x
  2. Step 2: Convert to fraction form
    122,889.55/169,600.34 = 75,174.65/x
  3. Step 3: Cross multiply
    122,889.55x = 169,600.34 × 75,174.65
  4. Step 4: Simplify right side
    122,889.55x = 12,749,646,199.38
  5. Step 5: Solve for x
    x = 12,749,646,199.38/122,889.55
  6. Step 6: Final answer
    x = 103,748.82

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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.