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Finding the Fourth Proportional to 125,165.66, 172,732.91 and 68,577.03

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Solution

The fourth proportional to 125,165.66, 172,732.91 and 68,577.03 is: 94,638.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,165.66 : 172,732.91 = 68,577.03 : x
  2. Step 2: Convert to fraction form
    125,165.66/172,732.91 = 68,577.03/x
  3. Step 3: Cross multiply
    125,165.66x = 172,732.91 × 68,577.03
  4. Step 4: Simplify right side
    125,165.66x = 11,845,509,608.17
  5. Step 5: Solve for x
    x = 11,845,509,608.17/125,165.66
  6. Step 6: Final answer
    x = 94,638.66

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1.5x scale

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.