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Finding the Fourth Proportional to 122,502.51, 169,081.02 and 80,036.64

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Solution

The fourth proportional to 122,502.51, 169,081.02 and 80,036.64 is: 110,468.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,502.51 : 169,081.02 = 80,036.64 : x
  2. Step 2: Convert to fraction form
    122,502.51/169,081.02 = 80,036.64/x
  3. Step 3: Cross multiply
    122,502.51x = 169,081.02 × 80,036.64
  4. Step 4: Simplify right side
    122,502.51x = 13,532,676,728.57
  5. Step 5: Solve for x
    x = 13,532,676,728.57/122,502.51
  6. Step 6: Final answer
    x = 110,468.57

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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.