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Finding the Fourth Proportional to 154,492.88, 213,203.48 and 87,424.88

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Solution

The fourth proportional to 154,492.88, 213,203.48 and 87,424.88 is: 120,648.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,492.88 : 213,203.48 = 87,424.88 : x
  2. Step 2: Convert to fraction form
    154,492.88/213,203.48 = 87,424.88/x
  3. Step 3: Cross multiply
    154,492.88x = 213,203.48 × 87,424.88
  4. Step 4: Simplify right side
    154,492.88x = 18,639,287,151.44
  5. Step 5: Solve for x
    x = 18,639,287,151.44/154,492.88
  6. Step 6: Final answer
    x = 120,648.20

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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.