Home / 156,621.90-216,136.40-85,001.96

Finding the Fourth Proportional to 156,621.90, 216,136.40 and 85,001.96

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Solution

The fourth proportional to 156,621.90, 216,136.40 and 85,001.96 is: 117,301.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,621.90 : 216,136.40 = 85,001.96 : x
  2. Step 2: Convert to fraction form
    156,621.90/216,136.40 = 85,001.96/x
  3. Step 3: Cross multiply
    156,621.90x = 216,136.40 × 85,001.96
  4. Step 4: Simplify right side
    156,621.90x = 18,372,017,627.34
  5. Step 5: Solve for x
    x = 18,372,017,627.34/156,621.90
  6. Step 6: Final answer
    x = 117,301.72

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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.