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Finding the Fourth Proportional to 186,072.90, 279,022.95 and 80,837.70

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Solution

The fourth proportional to 186,072.90, 279,022.95 and 80,837.70 is: 121,219.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,072.90 : 279,022.95 = 80,837.70 : x
  2. Step 2: Convert to fraction form
    186,072.90/279,022.95 = 80,837.70/x
  3. Step 3: Cross multiply
    186,072.90x = 279,022.95 × 80,837.70
  4. Step 4: Simplify right side
    186,072.90x = 22,555,573,525.22
  5. Step 5: Solve for x
    x = 22,555,573,525.22/186,072.90
  6. Step 6: Final answer
    x = 121,219.01

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1.5x scale

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.