Home / 121,454.40-182,181.60-51,412.80

Finding the Fourth Proportional to 121,454.40, 182,181.60 and 51,412.80

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Solution

The fourth proportional to 121,454.40, 182,181.60 and 51,412.80 is: 77,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,454.40 : 182,181.60 = 51,412.80 : x
  2. Step 2: Convert to fraction form
    121,454.40/182,181.60 = 51,412.80/x
  3. Step 3: Cross multiply
    121,454.40x = 182,181.60 × 51,412.80
  4. Step 4: Simplify right side
    121,454.40x = 9,366,466,164.48
  5. Step 5: Solve for x
    x = 9,366,466,164.48/121,454.40
  6. Step 6: Final answer
    x = 77,119.20

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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.