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Finding the Fourth Proportional to 157,155.68, 216,879.44 and 85,540.34

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Solution

The fourth proportional to 157,155.68, 216,879.44 and 85,540.34 is: 118,048.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,155.68 : 216,879.44 = 85,540.34 : x
  2. Step 2: Convert to fraction form
    157,155.68/216,879.44 = 85,540.34/x
  3. Step 3: Cross multiply
    157,155.68x = 216,879.44 × 85,540.34
  4. Step 4: Simplify right side
    157,155.68x = 18,551,940,608.91
  5. Step 5: Solve for x
    x = 18,551,940,608.91/157,155.68
  6. Step 6: Final answer
    x = 118,048.17

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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.