Home / 156,970.06-216,621.39-85,350.55

Finding the Fourth Proportional to 156,970.06, 216,621.39 and 85,350.55

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Solution

The fourth proportional to 156,970.06, 216,621.39 and 85,350.55 is: 117,785.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,970.06 : 216,621.39 = 85,350.55 : x
  2. Step 2: Convert to fraction form
    156,970.06/216,621.39 = 85,350.55/x
  3. Step 3: Cross multiply
    156,970.06x = 216,621.39 × 85,350.55
  4. Step 4: Simplify right side
    156,970.06x = 18,488,754,778.26
  5. Step 5: Solve for x
    x = 18,488,754,778.26/156,970.06
  6. Step 6: Final answer
    x = 117,785.23

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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.