Home / 129,738.50-179,039.13-70,122.50

Finding the Fourth Proportional to 129,738.50, 179,039.13 and 70,122.50

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Solution

The fourth proportional to 129,738.50, 179,039.13 and 70,122.50 is: 96,769.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,738.50 : 179,039.13 = 70,122.50 : x
  2. Step 2: Convert to fraction form
    129,738.50/179,039.13 = 70,122.50/x
  3. Step 3: Cross multiply
    129,738.50x = 179,039.13 × 70,122.50
  4. Step 4: Simplify right side
    129,738.50x = 12,554,671,393.43
  5. Step 5: Solve for x
    x = 12,554,671,393.43/129,738.50
  6. Step 6: Final answer
    x = 96,769.05

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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.