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Finding the Fourth Proportional to 186,548.80, 279,670.72 and 86,771.20

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Solution

The fourth proportional to 186,548.80, 279,670.72 and 86,771.20 is: 130,085.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,548.80 : 279,670.72 = 86,771.20 : x
  2. Step 2: Convert to fraction form
    186,548.80/279,670.72 = 86,771.20/x
  3. Step 3: Cross multiply
    186,548.80x = 279,670.72 × 86,771.20
  4. Step 4: Simplify right side
    186,548.80x = 24,267,363,979.26
  5. Step 5: Solve for x
    x = 24,267,363,979.26/186,548.80
  6. Step 6: Final answer
    x = 130,085.88

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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.