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Finding the Fourth Proportional to 186,300.95, 279,264.56 and 86,531.20

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Solution

The fourth proportional to 186,300.95, 279,264.56 and 86,531.20 is: 129,710.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,300.95 : 279,264.56 = 86,531.20 : x
  2. Step 2: Convert to fraction form
    186,300.95/279,264.56 = 86,531.20/x
  3. Step 3: Cross multiply
    186,300.95x = 279,264.56 × 86,531.20
  4. Step 4: Simplify right side
    186,300.95x = 24,165,098,421.06
  5. Step 5: Solve for x
    x = 24,165,098,421.06/186,300.95
  6. Step 6: Final answer
    x = 129,710.02

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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.