Home / 156,621.64-216,136.06-85,001.71

Finding the Fourth Proportional to 156,621.64, 216,136.06 and 85,001.71

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Solution

The fourth proportional to 156,621.64, 216,136.06 and 85,001.71 is: 117,301.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,621.64 : 216,136.06 = 85,001.71 : x
  2. Step 2: Convert to fraction form
    156,621.64/216,136.06 = 85,001.71/x
  3. Step 3: Cross multiply
    156,621.64x = 216,136.06 × 85,001.71
  4. Step 4: Simplify right side
    156,621.64x = 18,371,934,692.66
  5. Step 5: Solve for x
    x = 18,371,934,692.66/156,621.64
  6. Step 6: Final answer
    x = 117,301.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.