Home / 156,778.02-216,443.44-103,218.73

Finding the Fourth Proportional to 156,778.02, 216,443.44 and 103,218.73

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Solution

The fourth proportional to 156,778.02, 216,443.44 and 103,218.73 is: 142,500.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,778.02 : 216,443.44 = 103,218.73 : x
  2. Step 2: Convert to fraction form
    156,778.02/216,443.44 = 103,218.73/x
  3. Step 3: Cross multiply
    156,778.02x = 216,443.44 × 103,218.73
  4. Step 4: Simplify right side
    156,778.02x = 22,341,016,993.63
  5. Step 5: Solve for x
    x = 22,341,016,993.63/156,778.02
  6. Step 6: Final answer
    x = 142,500.95

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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.