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Finding the Fourth Proportional to 125,216.90, 172,798.35 and 68,628.14

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Solution

The fourth proportional to 125,216.90, 172,798.35 and 68,628.14 is: 94,706.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,216.90 : 172,798.35 = 68,628.14 : x
  2. Step 2: Convert to fraction form
    125,216.90/172,798.35 = 68,628.14/x
  3. Step 3: Cross multiply
    125,216.90x = 172,798.35 × 68,628.14
  4. Step 4: Simplify right side
    125,216.90x = 11,858,829,355.57
  5. Step 5: Solve for x
    x = 11,858,829,355.57/125,216.90
  6. Step 6: Final answer
    x = 94,706.30

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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.