Home / 120,317.91-180,654.28-67,113.84

Finding the Fourth Proportional to 120,317.91, 180,654.28 and 67,113.84

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Solution

The fourth proportional to 120,317.91, 180,654.28 and 67,113.84 is: 100,769.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,317.91 : 180,654.28 = 67,113.84 : x
  2. Step 2: Convert to fraction form
    120,317.91/180,654.28 = 67,113.84/x
  3. Step 3: Cross multiply
    120,317.91x = 180,654.28 × 67,113.84
  4. Step 4: Simplify right side
    120,317.91x = 12,124,402,443.24
  5. Step 5: Solve for x
    x = 12,124,402,443.24/120,317.91
  6. Step 6: Final answer
    x = 100,769.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.