Home / 129,630.13-178,889.60-70,014.13

Finding the Fourth Proportional to 129,630.13, 178,889.60 and 70,014.13

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Solution

The fourth proportional to 129,630.13, 178,889.60 and 70,014.13 is: 96,619.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,630.13 : 178,889.60 = 70,014.13 : x
  2. Step 2: Convert to fraction form
    129,630.13/178,889.60 = 70,014.13/x
  3. Step 3: Cross multiply
    129,630.13x = 178,889.60 × 70,014.13
  4. Step 4: Simplify right side
    129,630.13x = 12,524,799,710.05
  5. Step 5: Solve for x
    x = 12,524,799,710.05/129,630.13
  6. Step 6: Final answer
    x = 96,619.51

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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.