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Finding the Fourth Proportional to 125,215.31, 172,796.72 and 67,854.84

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Solution

The fourth proportional to 125,215.31, 172,796.72 and 67,854.84 is: 93,639.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,215.31 : 172,796.72 = 67,854.84 : x
  2. Step 2: Convert to fraction form
    125,215.31/172,796.72 = 67,854.84/x
  3. Step 3: Cross multiply
    125,215.31x = 172,796.72 × 67,854.84
  4. Step 4: Simplify right side
    125,215.31x = 11,725,093,448.85
  5. Step 5: Solve for x
    x = 11,725,093,448.85/125,215.31
  6. Step 6: Final answer
    x = 93,639.46

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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.