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Finding the Fourth Proportional to 186,040.40, 279,060.60 and 67,715.60

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Solution

The fourth proportional to 186,040.40, 279,060.60 and 67,715.60 is: 101,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,040.40 : 279,060.60 = 67,715.60 : x
  2. Step 2: Convert to fraction form
    186,040.40/279,060.60 = 67,715.60/x
  3. Step 3: Cross multiply
    186,040.40x = 279,060.60 × 67,715.60
  4. Step 4: Simplify right side
    186,040.40x = 18,896,755,965.36
  5. Step 5: Solve for x
    x = 18,896,755,965.36/186,040.40
  6. Step 6: Final answer
    x = 101,573.40

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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.