Home / 156,851.47-216,456.39-85,231.50

Finding the Fourth Proportional to 156,851.47, 216,456.39 and 85,231.50

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Solution

The fourth proportional to 156,851.47, 216,456.39 and 85,231.50 is: 117,620.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,851.47 : 216,456.39 = 85,231.50 : x
  2. Step 2: Convert to fraction form
    156,851.47/216,456.39 = 85,231.50/x
  3. Step 3: Cross multiply
    156,851.47x = 216,456.39 × 85,231.50
  4. Step 4: Simplify right side
    156,851.47x = 18,448,902,804.29
  5. Step 5: Solve for x
    x = 18,448,902,804.29/156,851.47
  6. Step 6: Final answer
    x = 117,620.21

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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.