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Finding the Fourth Proportional to 186,143.67, 279,159.69 and 79,523.32

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Solution

The fourth proportional to 186,143.67, 279,159.69 and 79,523.32 is: 119,261.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,143.67 : 279,159.69 = 79,523.32 : x
  2. Step 2: Convert to fraction form
    186,143.67/279,159.69 = 79,523.32/x
  3. Step 3: Cross multiply
    186,143.67x = 279,159.69 × 79,523.32
  4. Step 4: Simplify right side
    186,143.67x = 22,199,705,259.05
  5. Step 5: Solve for x
    x = 22,199,705,259.05/186,143.67
  6. Step 6: Final answer
    x = 119,261.13

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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.