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Finding the Fourth Proportional to 186,088.64, 279,132.96 and 80,907.61

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Solution

The fourth proportional to 186,088.64, 279,132.96 and 80,907.61 is: 121,361.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,088.64 : 279,132.96 = 80,907.61 : x
  2. Step 2: Convert to fraction form
    186,088.64/279,132.96 = 80,907.61/x
  3. Step 3: Cross multiply
    186,088.64x = 279,132.96 × 80,907.61
  4. Step 4: Simplify right side
    186,088.64x = 22,583,980,567.22
  5. Step 5: Solve for x
    x = 22,583,980,567.22/186,088.64
  6. Step 6: Final answer
    x = 121,361.41

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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.