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Finding the Fourth Proportional to 122,559.99, 169,151.20 and 74,840.87

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Solution

The fourth proportional to 122,559.99, 169,151.20 and 74,840.87 is: 103,291.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,559.99 : 169,151.20 = 74,840.87 : x
  2. Step 2: Convert to fraction form
    122,559.99/169,151.20 = 74,840.87/x
  3. Step 3: Cross multiply
    122,559.99x = 169,151.20 × 74,840.87
  4. Step 4: Simplify right side
    122,559.99x = 12,659,422,123.79
  5. Step 5: Solve for x
    x = 12,659,422,123.79/122,559.99
  6. Step 6: Final answer
    x = 103,291.64

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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.