Home / 131,977.40-182,139.18-75,407

Finding the Fourth Proportional to 131,977.40, 182,139.18 and 75,407

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Solution

The fourth proportional to 131,977.40, 182,139.18 and 75,407 is: 104,067.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,977.40 : 182,139.18 = 75,407 : x
  2. Step 2: Convert to fraction form
    131,977.40/182,139.18 = 75,407/x
  3. Step 3: Cross multiply
    131,977.40x = 182,139.18 × 75,407
  4. Step 4: Simplify right side
    131,977.40x = 13,734,569,146.26
  5. Step 5: Solve for x
    x = 13,734,569,146.26/131,977.40
  6. Step 6: Final answer
    x = 104,067.58

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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.