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Finding the Fourth Proportional to 186,286.64, 279,342.44 and 86,384.48

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Solution

The fourth proportional to 186,286.64, 279,342.44 and 86,384.48 is: 129,536.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,286.64 : 279,342.44 = 86,384.48 : x
  2. Step 2: Convert to fraction form
    186,286.64/279,342.44 = 86,384.48/x
  3. Step 3: Cross multiply
    186,286.64x = 279,342.44 × 86,384.48
  4. Step 4: Simplify right side
    186,286.64x = 24,130,851,421.33
  5. Step 5: Solve for x
    x = 24,130,851,421.33/186,286.64
  6. Step 6: Final answer
    x = 129,536.14

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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.