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Finding the Fourth Proportional to 158,908.16, 219,294.81 and 87,288.19

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Solution

The fourth proportional to 158,908.16, 219,294.81 and 87,288.19 is: 120,458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,908.16 : 219,294.81 = 87,288.19 : x
  2. Step 2: Convert to fraction form
    158,908.16/219,294.81 = 87,288.19/x
  3. Step 3: Cross multiply
    158,908.16x = 219,294.81 × 87,288.19
  4. Step 4: Simplify right side
    158,908.16x = 19,141,846,493.06
  5. Step 5: Solve for x
    x = 19,141,846,493.06/158,908.16
  6. Step 6: Final answer
    x = 120,458.55

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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.