Home / 156,202.40-234,459.12-86,114.72

Finding the Fourth Proportional to 156,202.40, 234,459.12 and 86,114.72

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Solution

The fourth proportional to 156,202.40, 234,459.12 and 86,114.72 is: 129,257.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,202.40 : 234,459.12 = 86,114.72 : x
  2. Step 2: Convert to fraction form
    156,202.40/234,459.12 = 86,114.72/x
  3. Step 3: Cross multiply
    156,202.40x = 234,459.12 × 86,114.72
  4. Step 4: Simplify right side
    156,202.40x = 20,190,381,470.25
  5. Step 5: Solve for x
    x = 20,190,381,470.25/156,202.40
  6. Step 6: Final answer
    x = 129,257.82

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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.