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Finding the Fourth Proportional to 125,342.50, 172,972.65 and 68,754.01

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Solution

The fourth proportional to 125,342.50, 172,972.65 and 68,754.01 is: 94,880.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,342.50 : 172,972.65 = 68,754.01 : x
  2. Step 2: Convert to fraction form
    125,342.50/172,972.65 = 68,754.01/x
  3. Step 3: Cross multiply
    125,342.50x = 172,972.65 × 68,754.01
  4. Step 4: Simplify right side
    125,342.50x = 11,892,563,307.83
  5. Step 5: Solve for x
    x = 11,892,563,307.83/125,342.50
  6. Step 6: Final answer
    x = 94,880.53

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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.