Home / 159,965.12-240,095.28-81,134.70

Finding the Fourth Proportional to 159,965.12, 240,095.28 and 81,134.70

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Solution

The fourth proportional to 159,965.12, 240,095.28 and 81,134.70 is: 121,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,965.12 : 240,095.28 = 81,134.70 : x
  2. Step 2: Convert to fraction form
    159,965.12/240,095.28 = 81,134.70/x
  3. Step 3: Cross multiply
    159,965.12x = 240,095.28 × 81,134.70
  4. Step 4: Simplify right side
    159,965.12x = 19,480,058,514.22
  5. Step 5: Solve for x
    x = 19,480,058,514.22/159,965.12
  6. Step 6: Final answer
    x = 121,776.91

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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.