Home / 138,934.19-191,729.39-75,272.00

Finding the Fourth Proportional to 138,934.19, 191,729.39 and 75,272.00

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Solution

The fourth proportional to 138,934.19, 191,729.39 and 75,272.00 is: 103,875.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,934.19 : 191,729.39 = 75,272.00 : x
  2. Step 2: Convert to fraction form
    138,934.19/191,729.39 = 75,272.00/x
  3. Step 3: Cross multiply
    138,934.19x = 191,729.39 × 75,272.00
  4. Step 4: Simplify right side
    138,934.19x = 14,431,853,309.07
  5. Step 5: Solve for x
    x = 14,431,853,309.07/138,934.19
  6. Step 6: Final answer
    x = 103,875.46

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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.