Home / 120,034.24-165,595.21-72,259.91

Finding the Fourth Proportional to 120,034.24, 165,595.21 and 72,259.91

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Solution

The fourth proportional to 120,034.24, 165,595.21 and 72,259.91 is: 99,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,034.24 : 165,595.21 = 72,259.91 : x
  2. Step 2: Convert to fraction form
    120,034.24/165,595.21 = 72,259.91/x
  3. Step 3: Cross multiply
    120,034.24x = 165,595.21 × 72,259.91
  4. Step 4: Simplify right side
    120,034.24x = 11,965,894,971.03
  5. Step 5: Solve for x
    x = 11,965,894,971.03/120,034.24
  6. Step 6: Final answer
    x = 99,687.35

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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.