Home / 120,079.59-179,971.75-67,378.35

Finding the Fourth Proportional to 120,079.59, 179,971.75 and 67,378.35

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Solution

The fourth proportional to 120,079.59, 179,971.75 and 67,378.35 is: 100,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,079.59 : 179,971.75 = 67,378.35 : x
  2. Step 2: Convert to fraction form
    120,079.59/179,971.75 = 67,378.35/x
  3. Step 3: Cross multiply
    120,079.59x = 179,971.75 × 67,378.35
  4. Step 4: Simplify right side
    120,079.59x = 12,126,199,561.61
  5. Step 5: Solve for x
    x = 12,126,199,561.61/120,079.59
  6. Step 6: Final answer
    x = 100,984.68

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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.