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Finding the Fourth Proportional to 186,070.40, 279,019.20 and 80,835.20

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Solution

The fourth proportional to 186,070.40, 279,019.20 and 80,835.20 is: 121,215.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,070.40 : 279,019.20 = 80,835.20 : x
  2. Step 2: Convert to fraction form
    186,070.40/279,019.20 = 80,835.20/x
  3. Step 3: Cross multiply
    186,070.40x = 279,019.20 × 80,835.20
  4. Step 4: Simplify right side
    186,070.40x = 22,554,572,835.84
  5. Step 5: Solve for x
    x = 22,554,572,835.84/186,070.40
  6. Step 6: Final answer
    x = 121,215.26

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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.