Home / 103,766.40-155,649.60-51,278.40

Finding the Fourth Proportional to 103,766.40, 155,649.60 and 51,278.40

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Solution

The fourth proportional to 103,766.40, 155,649.60 and 51,278.40 is: 76,917.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,766.40 : 155,649.60 = 51,278.40 : x
  2. Step 2: Convert to fraction form
    103,766.40/155,649.60 = 51,278.40/x
  3. Step 3: Cross multiply
    103,766.40x = 155,649.60 × 51,278.40
  4. Step 4: Simplify right side
    103,766.40x = 7,981,462,448.64
  5. Step 5: Solve for x
    x = 7,981,462,448.64/103,766.40
  6. Step 6: Final answer
    x = 76,917.60

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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.