Home / 142,440.20-213,813.90-80,232.20

Finding the Fourth Proportional to 142,440.20, 213,813.90 and 80,232.20

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Solution

The fourth proportional to 142,440.20, 213,813.90 and 80,232.20 is: 120,434.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,440.20 : 213,813.90 = 80,232.20 : x
  2. Step 2: Convert to fraction form
    142,440.20/213,813.90 = 80,232.20/x
  3. Step 3: Cross multiply
    142,440.20x = 213,813.90 × 80,232.20
  4. Step 4: Simplify right side
    142,440.20x = 17,154,759,587.58
  5. Step 5: Solve for x
    x = 17,154,759,587.58/142,440.20
  6. Step 6: Final answer
    x = 120,434.82

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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.