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Finding the Fourth Proportional to 158,895.84, 238,340.10 and 79,988.88

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Solution

The fourth proportional to 158,895.84, 238,340.10 and 79,988.88 is: 119,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,895.84 : 238,340.10 = 79,988.88 : x
  2. Step 2: Convert to fraction form
    158,895.84/238,340.10 = 79,988.88/x
  3. Step 3: Cross multiply
    158,895.84x = 238,340.10 × 79,988.88
  4. Step 4: Simplify right side
    158,895.84x = 19,064,557,658.09
  5. Step 5: Solve for x
    x = 19,064,557,658.09/158,895.84
  6. Step 6: Final answer
    x = 119,981.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.