Home / 129,870.26-179,219.21-72,510.46

Finding the Fourth Proportional to 129,870.26, 179,219.21 and 72,510.46

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Solution

The fourth proportional to 129,870.26, 179,219.21 and 72,510.46 is: 100,063.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,870.26 : 179,219.21 = 72,510.46 : x
  2. Step 2: Convert to fraction form
    129,870.26/179,219.21 = 72,510.46/x
  3. Step 3: Cross multiply
    129,870.26x = 179,219.21 × 72,510.46
  4. Step 4: Simplify right side
    129,870.26x = 12,995,266,819.25
  5. Step 5: Solve for x
    x = 12,995,266,819.25/129,870.26
  6. Step 6: Final answer
    x = 100,063.46

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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.