Home / 115,129.80-158,868.27-64,137.33

Finding the Fourth Proportional to 115,129.80, 158,868.27 and 64,137.33

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Solution

The fourth proportional to 115,129.80, 158,868.27 and 64,137.33 is: 88,503.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,129.80 : 158,868.27 = 64,137.33 : x
  2. Step 2: Convert to fraction form
    115,129.80/158,868.27 = 64,137.33/x
  3. Step 3: Cross multiply
    115,129.80x = 158,868.27 × 64,137.33
  4. Step 4: Simplify right side
    115,129.80x = 10,189,386,659.52
  5. Step 5: Solve for x
    x = 10,189,386,659.52/115,129.80
  6. Step 6: Final answer
    x = 88,503.47

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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.