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Finding the Fourth Proportional to 159,017.16, 219,433.32 and 91,034.64

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Solution

The fourth proportional to 159,017.16, 219,433.32 and 91,034.64 is: 125,621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,017.16 : 219,433.32 = 91,034.64 : x
  2. Step 2: Convert to fraction form
    159,017.16/219,433.32 = 91,034.64/x
  3. Step 3: Cross multiply
    159,017.16x = 219,433.32 × 91,034.64
  4. Step 4: Simplify right side
    159,017.16x = 19,976,033,290.20
  5. Step 5: Solve for x
    x = 19,976,033,290.20/159,017.16
  6. Step 6: Final answer
    x = 125,621.87

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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.