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Finding the Fourth Proportional to 158,743.80, 238,115.70 and 69,951.60

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Solution

The fourth proportional to 158,743.80, 238,115.70 and 69,951.60 is: 104,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,743.80 : 238,115.70 = 69,951.60 : x
  2. Step 2: Convert to fraction form
    158,743.80/238,115.70 = 69,951.60/x
  3. Step 3: Cross multiply
    158,743.80x = 238,115.70 × 69,951.60
  4. Step 4: Simplify right side
    158,743.80x = 16,656,574,200.12
  5. Step 5: Solve for x
    x = 16,656,574,200.12/158,743.80
  6. Step 6: Final answer
    x = 104,927.40

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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.