Home / 115,117.91-158,860.31-64,130.57

Finding the Fourth Proportional to 115,117.91, 158,860.31 and 64,130.57

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Solution

The fourth proportional to 115,117.91, 158,860.31 and 64,130.57 is: 88,498.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,117.91 : 158,860.31 = 64,130.57 : x
  2. Step 2: Convert to fraction form
    115,117.91/158,860.31 = 64,130.57/x
  3. Step 3: Cross multiply
    115,117.91x = 158,860.31 × 64,130.57
  4. Step 4: Simplify right side
    115,117.91x = 10,187,801,115.72
  5. Step 5: Solve for x
    x = 10,187,801,115.72/115,117.91
  6. Step 6: Final answer
    x = 88,498.84

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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.