Home / 125,402.72-173,055.84-68,817.20

Finding the Fourth Proportional to 125,402.72, 173,055.84 and 68,817.20

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Solution

The fourth proportional to 125,402.72, 173,055.84 and 68,817.20 is: 94,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,402.72 : 173,055.84 = 68,817.20 : x
  2. Step 2: Convert to fraction form
    125,402.72/173,055.84 = 68,817.20/x
  3. Step 3: Cross multiply
    125,402.72x = 173,055.84 × 68,817.20
  4. Step 4: Simplify right side
    125,402.72x = 11,909,218,352.45
  5. Step 5: Solve for x
    x = 11,909,218,352.45/125,402.72
  6. Step 6: Final answer
    x = 94,967.78

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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.