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Finding the Fourth Proportional to 125,234.70, 172,830.51 and 68,648.46

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Solution

The fourth proportional to 125,234.70, 172,830.51 and 68,648.46 is: 94,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,234.70 : 172,830.51 = 68,648.46 : x
  2. Step 2: Convert to fraction form
    125,234.70/172,830.51 = 68,648.46/x
  3. Step 3: Cross multiply
    125,234.70x = 172,830.51 × 68,648.46
  4. Step 4: Simplify right side
    125,234.70x = 11,864,548,352.51
  5. Step 5: Solve for x
    x = 11,864,548,352.51/125,234.70
  6. Step 6: Final answer
    x = 94,738.51

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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.