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Finding the Fourth Proportional to 186,483.21, 279,724.59 and 86,588.80

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Solution

The fourth proportional to 186,483.21, 279,724.59 and 86,588.80 is: 129,883.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,483.21 : 279,724.59 = 86,588.80 : x
  2. Step 2: Convert to fraction form
    186,483.21/279,724.59 = 86,588.80/x
  3. Step 3: Cross multiply
    186,483.21x = 279,724.59 × 86,588.80
  4. Step 4: Simplify right side
    186,483.21x = 24,221,015,879.28
  5. Step 5: Solve for x
    x = 24,221,015,879.28/186,483.21
  6. Step 6: Final answer
    x = 129,883.09

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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.