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Finding the Fourth Proportional to 186,561.77, 279,886.40 and 74,248.79

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Solution

The fourth proportional to 186,561.77, 279,886.40 and 74,248.79 is: 111,390.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,561.77 : 279,886.40 = 74,248.79 : x
  2. Step 2: Convert to fraction form
    186,561.77/279,886.40 = 74,248.79/x
  3. Step 3: Cross multiply
    186,561.77x = 279,886.40 × 74,248.79
  4. Step 4: Simplify right side
    186,561.77x = 20,781,227,422.79
  5. Step 5: Solve for x
    x = 20,781,227,422.79/186,561.77
  6. Step 6: Final answer
    x = 111,390.60

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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.