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Finding the Fourth Proportional to 125,216.82, 172,798.88 and 67,857.74

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Solution

The fourth proportional to 125,216.82, 172,798.88 and 67,857.74 is: 93,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,216.82 : 172,798.88 = 67,857.74 : x
  2. Step 2: Convert to fraction form
    125,216.82/172,798.88 = 67,857.74/x
  3. Step 3: Cross multiply
    125,216.82x = 172,798.88 × 67,857.74
  4. Step 4: Simplify right side
    125,216.82x = 11,725,741,471.33
  5. Step 5: Solve for x
    x = 11,725,741,471.33/125,216.82
  6. Step 6: Final answer
    x = 93,643.50

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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.