Home / 142,360.20-213,540.30-90,001.80

Finding the Fourth Proportional to 142,360.20, 213,540.30 and 90,001.80

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Solution

The fourth proportional to 142,360.20, 213,540.30 and 90,001.80 is: 135,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,360.20 : 213,540.30 = 90,001.80 : x
  2. Step 2: Convert to fraction form
    142,360.20/213,540.30 = 90,001.80/x
  3. Step 3: Cross multiply
    142,360.20x = 213,540.30 × 90,001.80
  4. Step 4: Simplify right side
    142,360.20x = 19,219,011,372.54
  5. Step 5: Solve for x
    x = 19,219,011,372.54/142,360.20
  6. Step 6: Final answer
    x = 135,002.70

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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.