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Finding the Fourth Proportional to 131,472.60, 197,208.90 and 92,106.60

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Solution

The fourth proportional to 131,472.60, 197,208.90 and 92,106.60 is: 138,159.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,472.60 : 197,208.90 = 92,106.60 : x
  2. Step 2: Convert to fraction form
    131,472.60/197,208.90 = 92,106.60/x
  3. Step 3: Cross multiply
    131,472.60x = 197,208.90 × 92,106.60
  4. Step 4: Simplify right side
    131,472.60x = 18,164,241,268.74
  5. Step 5: Solve for x
    x = 18,164,241,268.74/131,472.60
  6. Step 6: Final answer
    x = 138,159.90

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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.