Home / 125,979.79-173,790.88-80,621.41

Finding the Fourth Proportional to 125,979.79, 173,790.88 and 80,621.41

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Solution

The fourth proportional to 125,979.79, 173,790.88 and 80,621.41 is: 111,218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,979.79 : 173,790.88 = 80,621.41 : x
  2. Step 2: Convert to fraction form
    125,979.79/173,790.88 = 80,621.41/x
  3. Step 3: Cross multiply
    125,979.79x = 173,790.88 × 80,621.41
  4. Step 4: Simplify right side
    125,979.79x = 14,011,265,790.74
  5. Step 5: Solve for x
    x = 14,011,265,790.74/125,979.79
  6. Step 6: Final answer
    x = 111,218.36

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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.