Home / 138,673.12-191,369.04-75,010.72

Finding the Fourth Proportional to 138,673.12, 191,369.04 and 75,010.72

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Solution

The fourth proportional to 138,673.12, 191,369.04 and 75,010.72 is: 103,514.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,673.12 : 191,369.04 = 75,010.72 : x
  2. Step 2: Convert to fraction form
    138,673.12/191,369.04 = 75,010.72/x
  3. Step 3: Cross multiply
    138,673.12x = 191,369.04 × 75,010.72
  4. Step 4: Simplify right side
    138,673.12x = 14,354,729,476.11
  5. Step 5: Solve for x
    x = 14,354,729,476.11/138,673.12
  6. Step 6: Final answer
    x = 103,514.87

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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.