Home / 115,909.80-173,864.70-71,623.05

Finding the Fourth Proportional to 115,909.80, 173,864.70 and 71,623.05

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Solution

The fourth proportional to 115,909.80, 173,864.70 and 71,623.05 is: 107,434.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,909.80 : 173,864.70 = 71,623.05 : x
  2. Step 2: Convert to fraction form
    115,909.80/173,864.70 = 71,623.05/x
  3. Step 3: Cross multiply
    115,909.80x = 173,864.70 × 71,623.05
  4. Step 4: Simplify right side
    115,909.80x = 12,452,720,101.34
  5. Step 5: Solve for x
    x = 12,452,720,101.34/115,909.80
  6. Step 6: Final answer
    x = 107,434.58

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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.