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Finding the Fourth Proportional to 161,957.32, 242,936.02 and 86,974.32

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Solution

The fourth proportional to 161,957.32, 242,936.02 and 86,974.32 is: 130,461.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,957.32 : 242,936.02 = 86,974.32 : x
  2. Step 2: Convert to fraction form
    161,957.32/242,936.02 = 86,974.32/x
  3. Step 3: Cross multiply
    161,957.32x = 242,936.02 × 86,974.32
  4. Step 4: Simplify right side
    161,957.32x = 21,129,195,143.01
  5. Step 5: Solve for x
    x = 21,129,195,143.01/161,957.32
  6. Step 6: Final answer
    x = 130,461.50

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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.