Home / 186,005.40-279,008.10-67,680.60

Finding the Fourth Proportional to 186,005.40, 279,008.10 and 67,680.60

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Solution

The fourth proportional to 186,005.40, 279,008.10 and 67,680.60 is: 101,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,005.40 : 279,008.10 = 67,680.60 : x
  2. Step 2: Convert to fraction form
    186,005.40/279,008.10 = 67,680.60/x
  3. Step 3: Cross multiply
    186,005.40x = 279,008.10 × 67,680.60
  4. Step 4: Simplify right side
    186,005.40x = 18,883,435,612.86
  5. Step 5: Solve for x
    x = 18,883,435,612.86/186,005.40
  6. Step 6: Final answer
    x = 101,520.90

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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.