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Finding the Fourth Proportional to 154,190.90, 212,809.74 and 89,697.56

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Solution

The fourth proportional to 154,190.90, 212,809.74 and 89,697.56 is: 123,797.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,190.90 : 212,809.74 = 89,697.56 : x
  2. Step 2: Convert to fraction form
    154,190.90/212,809.74 = 89,697.56/x
  3. Step 3: Cross multiply
    154,190.90x = 212,809.74 × 89,697.56
  4. Step 4: Simplify right side
    154,190.90x = 19,088,514,954.26
  5. Step 5: Solve for x
    x = 19,088,514,954.26/154,190.90
  6. Step 6: Final answer
    x = 123,797.94

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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.