Home / 129,971.61-179,340.60-73,381.77

Finding the Fourth Proportional to 129,971.61, 179,340.60 and 73,381.77

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Solution

The fourth proportional to 129,971.61, 179,340.60 and 73,381.77 is: 101,255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,971.61 : 179,340.60 = 73,381.77 : x
  2. Step 2: Convert to fraction form
    129,971.61/179,340.60 = 73,381.77/x
  3. Step 3: Cross multiply
    129,971.61x = 179,340.60 × 73,381.77
  4. Step 4: Simplify right side
    129,971.61x = 13,160,330,660.86
  5. Step 5: Solve for x
    x = 13,160,330,660.86/129,971.61
  6. Step 6: Final answer
    x = 101,255.43

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1.5x scale

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.