Home / 142,780.20-214,170.30-90,018.60

Finding the Fourth Proportional to 142,780.20, 214,170.30 and 90,018.60

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Solution

The fourth proportional to 142,780.20, 214,170.30 and 90,018.60 is: 135,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,780.20 : 214,170.30 = 90,018.60 : x
  2. Step 2: Convert to fraction form
    142,780.20/214,170.30 = 90,018.60/x
  3. Step 3: Cross multiply
    142,780.20x = 214,170.30 × 90,018.60
  4. Step 4: Simplify right side
    142,780.20x = 19,279,310,567.58
  5. Step 5: Solve for x
    x = 19,279,310,567.58/142,780.20
  6. Step 6: Final answer
    x = 135,027.90

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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.