Home / 142,803.60-214,000.20-80,342.16

Finding the Fourth Proportional to 142,803.60, 214,000.20 and 80,342.16

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Solution

The fourth proportional to 142,803.60, 214,000.20 and 80,342.16 is: 120,397.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,803.60 : 214,000.20 = 80,342.16 : x
  2. Step 2: Convert to fraction form
    142,803.60/214,000.20 = 80,342.16/x
  3. Step 3: Cross multiply
    142,803.60x = 214,000.20 × 80,342.16
  4. Step 4: Simplify right side
    142,803.60x = 17,193,238,308.43
  5. Step 5: Solve for x
    x = 17,193,238,308.43/142,803.60
  6. Step 6: Final answer
    x = 120,397.79

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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.