Home / 156,576.60-234,937.80-81,781.20

Finding the Fourth Proportional to 156,576.60, 234,937.80 and 81,781.20

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Solution

The fourth proportional to 156,576.60, 234,937.80 and 81,781.20 is: 122,709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,576.60 : 234,937.80 = 81,781.20 : x
  2. Step 2: Convert to fraction form
    156,576.60/234,937.80 = 81,781.20/x
  3. Step 3: Cross multiply
    156,576.60x = 234,937.80 × 81,781.20
  4. Step 4: Simplify right side
    156,576.60x = 19,213,495,209.36
  5. Step 5: Solve for x
    x = 19,213,495,209.36/156,576.60
  6. Step 6: Final answer
    x = 122,709.88

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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.