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Finding the Fourth Proportional to 154,598.67, 213,388.16 and 90,956.97

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Solution

The fourth proportional to 154,598.67, 213,388.16 and 90,956.97 is: 125,545.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,598.67 : 213,388.16 = 90,956.97 : x
  2. Step 2: Convert to fraction form
    154,598.67/213,388.16 = 90,956.97/x
  3. Step 3: Cross multiply
    154,598.67x = 213,388.16 × 90,956.97
  4. Step 4: Simplify right side
    154,598.67x = 19,409,140,012.69
  5. Step 5: Solve for x
    x = 19,409,140,012.69/154,598.67
  6. Step 6: Final answer
    x = 125,545.32

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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.