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Finding the Fourth Proportional to 179,443.40, 269,456.70 and 129,871.40

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Solution

The fourth proportional to 179,443.40, 269,456.70 and 129,871.40 is: 195,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,443.40 : 269,456.70 = 129,871.40 : x
  2. Step 2: Convert to fraction form
    179,443.40/269,456.70 = 129,871.40/x
  3. Step 3: Cross multiply
    179,443.40x = 269,456.70 × 129,871.40
  4. Step 4: Simplify right side
    179,443.40x = 34,994,718,868.38
  5. Step 5: Solve for x
    x = 34,994,718,868.38/179,443.40
  6. Step 6: Final answer
    x = 195,018.14

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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.