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Finding the Fourth Proportional to 154,468.60, 231,702.90 and 54,741.40

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Solution

The fourth proportional to 154,468.60, 231,702.90 and 54,741.40 is: 82,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,468.60 : 231,702.90 = 54,741.40 : x
  2. Step 2: Convert to fraction form
    154,468.60/231,702.90 = 54,741.40/x
  3. Step 3: Cross multiply
    154,468.60x = 231,702.90 × 54,741.40
  4. Step 4: Simplify right side
    154,468.60x = 12,683,741,130.06
  5. Step 5: Solve for x
    x = 12,683,741,130.06/154,468.60
  6. Step 6: Final answer
    x = 82,112.10

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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.