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Finding the Fourth Proportional to 158,908.82, 219,240.63 and 89,988.84

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Solution

The fourth proportional to 158,908.82, 219,240.63 and 89,988.84 is: 124,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,908.82 : 219,240.63 = 89,988.84 : x
  2. Step 2: Convert to fraction form
    158,908.82/219,240.63 = 89,988.84/x
  3. Step 3: Cross multiply
    158,908.82x = 219,240.63 × 89,988.84
  4. Step 4: Simplify right side
    158,908.82x = 19,729,209,974.57
  5. Step 5: Solve for x
    x = 19,729,209,974.57/158,908.82
  6. Step 6: Final answer
    x = 124,154.28

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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.