Home / 157,025.19-216,695.78-85,405.71

Finding the Fourth Proportional to 157,025.19, 216,695.78 and 85,405.71

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Solution

The fourth proportional to 157,025.19, 216,695.78 and 85,405.71 is: 117,860.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,025.19 : 216,695.78 = 85,405.71 : x
  2. Step 2: Convert to fraction form
    157,025.19/216,695.78 = 85,405.71/x
  3. Step 3: Cross multiply
    157,025.19x = 216,695.78 × 85,405.71
  4. Step 4: Simplify right side
    157,025.19x = 18,507,056,517.88
  5. Step 5: Solve for x
    x = 18,507,056,517.88/157,025.19
  6. Step 6: Final answer
    x = 117,860.43

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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.