Home / 105,691.08-145,849.82-57,943.38

Finding the Fourth Proportional to 105,691.08, 145,849.82 and 57,943.38

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Solution

The fourth proportional to 105,691.08, 145,849.82 and 57,943.38 is: 79,959.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,691.08 : 145,849.82 = 57,943.38 : x
  2. Step 2: Convert to fraction form
    105,691.08/145,849.82 = 57,943.38/x
  3. Step 3: Cross multiply
    105,691.08x = 145,849.82 × 57,943.38
  4. Step 4: Simplify right side
    105,691.08x = 8,451,031,543.19
  5. Step 5: Solve for x
    x = 8,451,031,543.19/105,691.08
  6. Step 6: Final answer
    x = 79,959.74

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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.