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Finding the Fourth Proportional to 125,143.82, 172,700.43 and 68,551.46

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Solution

The fourth proportional to 125,143.82, 172,700.43 and 68,551.46 is: 94,602.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,143.82 : 172,700.43 = 68,551.46 : x
  2. Step 2: Convert to fraction form
    125,143.82/172,700.43 = 68,551.46/x
  3. Step 3: Cross multiply
    125,143.82x = 172,700.43 × 68,551.46
  4. Step 4: Simplify right side
    125,143.82x = 11,838,866,619.13
  5. Step 5: Solve for x
    x = 11,838,866,619.13/125,143.82
  6. Step 6: Final answer
    x = 94,602.09

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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.