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Finding the Fourth Proportional to 151,718.76, 227,717.84 and 76,891.20

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Solution

The fourth proportional to 151,718.76, 227,717.84 and 76,891.20 is: 115,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,718.76 : 227,717.84 = 76,891.20 : x
  2. Step 2: Convert to fraction form
    151,718.76/227,717.84 = 76,891.20/x
  3. Step 3: Cross multiply
    151,718.76x = 227,717.84 × 76,891.20
  4. Step 4: Simplify right side
    151,718.76x = 17,509,497,979.01
  5. Step 5: Solve for x
    x = 17,509,497,979.01/151,718.76
  6. Step 6: Final answer
    x = 115,407.60

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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.