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Finding the Fourth Proportional to 186,064.90, 279,010.95 and 80,829.70

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Solution

The fourth proportional to 186,064.90, 279,010.95 and 80,829.70 is: 121,207.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,064.90 : 279,010.95 = 80,829.70 : x
  2. Step 2: Convert to fraction form
    186,064.90/279,010.95 = 80,829.70/x
  3. Step 3: Cross multiply
    186,064.90x = 279,010.95 × 80,829.70
  4. Step 4: Simplify right side
    186,064.90x = 22,552,371,385.22
  5. Step 5: Solve for x
    x = 22,552,371,385.22/186,064.90
  6. Step 6: Final answer
    x = 121,207.02

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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.