Home / 120,079.41-165,686.03-72,335.37

Finding the Fourth Proportional to 120,079.41, 165,686.03 and 72,335.37

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Solution

The fourth proportional to 120,079.41, 165,686.03 and 72,335.37 is: 99,808.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,079.41 : 165,686.03 = 72,335.37 : x
  2. Step 2: Convert to fraction form
    120,079.41/165,686.03 = 72,335.37/x
  3. Step 3: Cross multiply
    120,079.41x = 165,686.03 × 72,335.37
  4. Step 4: Simplify right side
    120,079.41x = 11,984,959,922.20
  5. Step 5: Solve for x
    x = 11,984,959,922.20/120,079.41
  6. Step 6: Final answer
    x = 99,808.62

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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.