Home / 142,876.80-214,315.20-129,098.70

Finding the Fourth Proportional to 142,876.80, 214,315.20 and 129,098.70

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Solution

The fourth proportional to 142,876.80, 214,315.20 and 129,098.70 is: 193,648.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,876.80 : 214,315.20 = 129,098.70 : x
  2. Step 2: Convert to fraction form
    142,876.80/214,315.20 = 129,098.70/x
  3. Step 3: Cross multiply
    142,876.80x = 214,315.20 × 129,098.70
  4. Step 4: Simplify right side
    142,876.80x = 27,667,813,710.24
  5. Step 5: Solve for x
    x = 27,667,813,710.24/142,876.80
  6. Step 6: Final answer
    x = 193,648.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.