Home / 129,741.68-179,043-70,125.68

Finding the Fourth Proportional to 129,741.68, 179,043 and 70,125.68

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Solution

The fourth proportional to 129,741.68, 179,043 and 70,125.68 is: 96,773.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,741.68 : 179,043 = 70,125.68 : x
  2. Step 2: Convert to fraction form
    129,741.68/179,043 = 70,125.68/x
  3. Step 3: Cross multiply
    129,741.68x = 179,043 × 70,125.68
  4. Step 4: Simplify right side
    129,741.68x = 12,555,512,124.24
  5. Step 5: Solve for x
    x = 12,555,512,124.24/129,741.68
  6. Step 6: Final answer
    x = 96,773.16

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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.