Home / 129,628.13-178,886.92-70,012.13

Finding the Fourth Proportional to 129,628.13, 178,886.92 and 70,012.13

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Solution

The fourth proportional to 129,628.13, 178,886.92 and 70,012.13 is: 96,616.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,628.13 : 178,886.92 = 70,012.13 : x
  2. Step 2: Convert to fraction form
    129,628.13/178,886.92 = 70,012.13/x
  3. Step 3: Cross multiply
    129,628.13x = 178,886.92 × 70,012.13
  4. Step 4: Simplify right side
    129,628.13x = 12,524,253,228.87
  5. Step 5: Solve for x
    x = 12,524,253,228.87/129,628.13
  6. Step 6: Final answer
    x = 96,616.79

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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.