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Finding the Fourth Proportional to 186,156.48, 279,303.84 and 86,364.48

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Solution

The fourth proportional to 186,156.48, 279,303.84 and 86,364.48 is: 129,578.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,156.48 : 279,303.84 = 86,364.48 : x
  2. Step 2: Convert to fraction form
    186,156.48/279,303.84 = 86,364.48/x
  3. Step 3: Cross multiply
    186,156.48x = 279,303.84 × 86,364.48
  4. Step 4: Simplify right side
    186,156.48x = 24,121,930,903.60
  5. Step 5: Solve for x
    x = 24,121,930,903.60/186,156.48
  6. Step 6: Final answer
    x = 129,578.79

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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.