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Finding the Fourth Proportional to 154,227.87, 212,748.98 and 89,690.04

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Solution

The fourth proportional to 154,227.87, 212,748.98 and 89,690.04 is: 123,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,227.87 : 212,748.98 = 89,690.04 : x
  2. Step 2: Convert to fraction form
    154,227.87/212,748.98 = 89,690.04/x
  3. Step 3: Cross multiply
    154,227.87x = 212,748.98 × 89,690.04
  4. Step 4: Simplify right side
    154,227.87x = 19,081,464,077.71
  5. Step 5: Solve for x
    x = 19,081,464,077.71/154,227.87
  6. Step 6: Final answer
    x = 123,722.54

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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.