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Finding the Fourth Proportional to 125,029.78, 172,541.22 and 68,441.26

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Solution

The fourth proportional to 125,029.78, 172,541.22 and 68,441.26 is: 94,449.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,029.78 : 172,541.22 = 68,441.26 : x
  2. Step 2: Convert to fraction form
    125,029.78/172,541.22 = 68,441.26/x
  3. Step 3: Cross multiply
    125,029.78x = 172,541.22 × 68,441.26
  4. Step 4: Simplify right side
    125,029.78x = 11,808,938,498.74
  5. Step 5: Solve for x
    x = 11,808,938,498.74/125,029.78
  6. Step 6: Final answer
    x = 94,449.01

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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.