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Finding the Fourth Proportional to 151,009.40, 226,689.08 and 81,025.40

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Solution

The fourth proportional to 151,009.40, 226,689.08 and 81,025.40 is: 121,631.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,009.40 : 226,689.08 = 81,025.40 : x
  2. Step 2: Convert to fraction form
    151,009.40/226,689.08 = 81,025.40/x
  3. Step 3: Cross multiply
    151,009.40x = 226,689.08 × 81,025.40
  4. Step 4: Simplify right side
    151,009.40x = 18,367,571,844.06
  5. Step 5: Solve for x
    x = 18,367,571,844.06/151,009.40
  6. Step 6: Final answer
    x = 121,631.98

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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.