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Finding the Fourth Proportional to 154,058.60, 231,164.70 and 87,549.80

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Solution

The fourth proportional to 154,058.60, 231,164.70 and 87,549.80 is: 131,368.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,058.60 : 231,164.70 = 87,549.80 : x
  2. Step 2: Convert to fraction form
    154,058.60/231,164.70 = 87,549.80/x
  3. Step 3: Cross multiply
    154,058.60x = 231,164.70 × 87,549.80
  4. Step 4: Simplify right side
    154,058.60x = 20,238,423,252.06
  5. Step 5: Solve for x
    x = 20,238,423,252.06/154,058.60
  6. Step 6: Final answer
    x = 131,368.34

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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.