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Finding the Fourth Proportional to 131,862.40, 197,858.40 and 61,729.60

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Solution

The fourth proportional to 131,862.40, 197,858.40 and 61,729.60 is: 92,624.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,862.40 : 197,858.40 = 61,729.60 : x
  2. Step 2: Convert to fraction form
    131,862.40/197,858.40 = 61,729.60/x
  3. Step 3: Cross multiply
    131,862.40x = 197,858.40 × 61,729.60
  4. Step 4: Simplify right side
    131,862.40x = 12,213,719,888.64
  5. Step 5: Solve for x
    x = 12,213,719,888.64/131,862.40
  6. Step 6: Final answer
    x = 92,624.74

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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.