Home / 115,421.31-173,186.80-79,937.24

Finding the Fourth Proportional to 115,421.31, 173,186.80 and 79,937.24

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Solution

The fourth proportional to 115,421.31, 173,186.80 and 79,937.24 is: 119,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,421.31 : 173,186.80 = 79,937.24 : x
  2. Step 2: Convert to fraction form
    115,421.31/173,186.80 = 79,937.24/x
  3. Step 3: Cross multiply
    115,421.31x = 173,186.80 × 79,937.24
  4. Step 4: Simplify right side
    115,421.31x = 13,844,074,796.43
  5. Step 5: Solve for x
    x = 13,844,074,796.43/115,421.31
  6. Step 6: Final answer
    x = 119,943.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.