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Finding the Fourth Proportional to 158,348.88, 218,521.53 and 86,733.45

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Solution

The fourth proportional to 158,348.88, 218,521.53 and 86,733.45 is: 119,692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,348.88 : 218,521.53 = 86,733.45 : x
  2. Step 2: Convert to fraction form
    158,348.88/218,521.53 = 86,733.45/x
  3. Step 3: Cross multiply
    158,348.88x = 218,521.53 × 86,733.45
  4. Step 4: Simplify right side
    158,348.88x = 18,953,126,196.18
  5. Step 5: Solve for x
    x = 18,953,126,196.18/158,348.88
  6. Step 6: Final answer
    x = 119,692.20

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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.