Home / 129,740.72-179,042.12-70,124.72

Finding the Fourth Proportional to 129,740.72, 179,042.12 and 70,124.72

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Solution

The fourth proportional to 129,740.72, 179,042.12 and 70,124.72 is: 96,772.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,740.72 : 179,042.12 = 70,124.72 : x
  2. Step 2: Convert to fraction form
    129,740.72/179,042.12 = 70,124.72/x
  3. Step 3: Cross multiply
    129,740.72x = 179,042.12 × 70,124.72
  4. Step 4: Simplify right side
    129,740.72x = 12,555,278,533.21
  5. Step 5: Solve for x
    x = 12,555,278,533.21/129,740.72
  6. Step 6: Final answer
    x = 96,772.07

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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.