Home / 125,378.90-173,023.09-68,790.68

Finding the Fourth Proportional to 125,378.90, 173,023.09 and 68,790.68

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Solution

The fourth proportional to 125,378.90, 173,023.09 and 68,790.68 is: 94,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,378.90 : 173,023.09 = 68,790.68 : x
  2. Step 2: Convert to fraction form
    125,378.90/173,023.09 = 68,790.68/x
  3. Step 3: Cross multiply
    125,378.90x = 173,023.09 × 68,790.68
  4. Step 4: Simplify right side
    125,378.90x = 11,902,376,016.80
  5. Step 5: Solve for x
    x = 11,902,376,016.80/125,378.90
  6. Step 6: Final answer
    x = 94,931.25

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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.