Home / 148,939.14-205,536-81,871.14

Finding the Fourth Proportional to 148,939.14, 205,536 and 81,871.14

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Solution

The fourth proportional to 148,939.14, 205,536 and 81,871.14 is: 112,982.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,939.14 : 205,536 = 81,871.14 : x
  2. Step 2: Convert to fraction form
    148,939.14/205,536 = 81,871.14/x
  3. Step 3: Cross multiply
    148,939.14x = 205,536 × 81,871.14
  4. Step 4: Simplify right side
    148,939.14x = 16,827,466,631.04
  5. Step 5: Solve for x
    x = 16,827,466,631.04/148,939.14
  6. Step 6: Final answer
    x = 112,982.17

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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.