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Finding the Fourth Proportional to 157,076.67, 216,728.96 and 89,078.79

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Solution

The fourth proportional to 157,076.67, 216,728.96 and 89,078.79 is: 122,907.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,076.67 : 216,728.96 = 89,078.79 : x
  2. Step 2: Convert to fraction form
    157,076.67/216,728.96 = 89,078.79/x
  3. Step 3: Cross multiply
    157,076.67x = 216,728.96 × 89,078.79
  4. Step 4: Simplify right side
    157,076.67x = 19,305,953,069.36
  5. Step 5: Solve for x
    x = 19,305,953,069.36/157,076.67
  6. Step 6: Final answer
    x = 122,907.83

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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.