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Finding the Fourth Proportional to 186,272.01, 279,213.51 and 86,349.81

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Solution

The fourth proportional to 186,272.01, 279,213.51 and 86,349.81 is: 129,434.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,272.01 : 279,213.51 = 86,349.81 : x
  2. Step 2: Convert to fraction form
    186,272.01/279,213.51 = 86,349.81/x
  3. Step 3: Cross multiply
    186,272.01x = 279,213.51 × 86,349.81
  4. Step 4: Simplify right side
    186,272.01x = 24,110,033,537.93
  5. Step 5: Solve for x
    x = 24,110,033,537.93/186,272.01
  6. Step 6: Final answer
    x = 129,434.55

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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.