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Finding the Fourth Proportional to 138,695.94, 191,400.84 and 75,034.26

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Solution

The fourth proportional to 138,695.94, 191,400.84 and 75,034.26 is: 103,547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,695.94 : 191,400.84 = 75,034.26 : x
  2. Step 2: Convert to fraction form
    138,695.94/191,400.84 = 75,034.26/x
  3. Step 3: Cross multiply
    138,695.94x = 191,400.84 × 75,034.26
  4. Step 4: Simplify right side
    138,695.94x = 14,361,620,392.78
  5. Step 5: Solve for x
    x = 14,361,620,392.78/138,695.94
  6. Step 6: Final answer
    x = 103,547.52

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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.