Home / 156,819.48-216,409.71-85,200.09

Finding the Fourth Proportional to 156,819.48, 216,409.71 and 85,200.09

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Solution

The fourth proportional to 156,819.48, 216,409.71 and 85,200.09 is: 117,575.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,819.48 : 216,409.71 = 85,200.09 : x
  2. Step 2: Convert to fraction form
    156,819.48/216,409.71 = 85,200.09/x
  3. Step 3: Cross multiply
    156,819.48x = 216,409.71 × 85,200.09
  4. Step 4: Simplify right side
    156,819.48x = 18,438,125,686.83
  5. Step 5: Solve for x
    x = 18,438,125,686.83/156,819.48
  6. Step 6: Final answer
    x = 117,575.48

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1.5x scale

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.