Home / 115,514.24-159,361.44-77,722.88

Finding the Fourth Proportional to 115,514.24, 159,361.44 and 77,722.88

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Solution

The fourth proportional to 115,514.24, 159,361.44 and 77,722.88 is: 107,225.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,514.24 : 159,361.44 = 77,722.88 : x
  2. Step 2: Convert to fraction form
    115,514.24/159,361.44 = 77,722.88/x
  3. Step 3: Cross multiply
    115,514.24x = 159,361.44 × 77,722.88
  4. Step 4: Simplify right side
    115,514.24x = 12,386,030,077.75
  5. Step 5: Solve for x
    x = 12,386,030,077.75/115,514.24
  6. Step 6: Final answer
    x = 107,225.14

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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.