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Finding the Fourth Proportional to 151,980.80, 227,971.20 and 122,456.30

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Solution

The fourth proportional to 151,980.80, 227,971.20 and 122,456.30 is: 183,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,980.80 : 227,971.20 = 122,456.30 : x
  2. Step 2: Convert to fraction form
    151,980.80/227,971.20 = 122,456.30/x
  3. Step 3: Cross multiply
    151,980.80x = 227,971.20 × 122,456.30
  4. Step 4: Simplify right side
    151,980.80x = 27,916,509,658.56
  5. Step 5: Solve for x
    x = 27,916,509,658.56/151,980.80
  6. Step 6: Final answer
    x = 183,684.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.