Home / 115,722.99-159,690.18-64,726.87

Finding the Fourth Proportional to 115,722.99, 159,690.18 and 64,726.87

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Solution

The fourth proportional to 115,722.99, 159,690.18 and 64,726.87 is: 89,318.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,722.99 : 159,690.18 = 64,726.87 : x
  2. Step 2: Convert to fraction form
    115,722.99/159,690.18 = 64,726.87/x
  3. Step 3: Cross multiply
    115,722.99x = 159,690.18 × 64,726.87
  4. Step 4: Simplify right side
    115,722.99x = 10,336,245,521.14
  5. Step 5: Solve for x
    x = 10,336,245,521.14/115,722.99
  6. Step 6: Final answer
    x = 89,318.86

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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.