Home / 115,020.12-158,726.14-64,719

Finding the Fourth Proportional to 115,020.12, 158,726.14 and 64,719

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Solution

The fourth proportional to 115,020.12, 158,726.14 and 64,719 is: 89,311.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,020.12 : 158,726.14 = 64,719 : x
  2. Step 2: Convert to fraction form
    115,020.12/158,726.14 = 64,719/x
  3. Step 3: Cross multiply
    115,020.12x = 158,726.14 × 64,719
  4. Step 4: Simplify right side
    115,020.12x = 10,272,597,054.66
  5. Step 5: Solve for x
    x = 10,272,597,054.66/115,020.12
  6. Step 6: Final answer
    x = 89,311.31

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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.