Home / 156,917.19-216,543.15-85,299

Finding the Fourth Proportional to 156,917.19, 216,543.15 and 85,299

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Solution

The fourth proportional to 156,917.19, 216,543.15 and 85,299 is: 117,711.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,917.19 : 216,543.15 = 85,299 : x
  2. Step 2: Convert to fraction form
    156,917.19/216,543.15 = 85,299/x
  3. Step 3: Cross multiply
    156,917.19x = 216,543.15 × 85,299
  4. Step 4: Simplify right side
    156,917.19x = 18,470,914,151.85
  5. Step 5: Solve for x
    x = 18,470,914,151.85/156,917.19
  6. Step 6: Final answer
    x = 117,711.22

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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.