Home / 82,860.40-124,290.60-76,445.20

Finding the Fourth Proportional to 82,860.40, 124,290.60 and 76,445.20

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Solution

The fourth proportional to 82,860.40, 124,290.60 and 76,445.20 is: 114,667.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,860.40 : 124,290.60 = 76,445.20 : x
  2. Step 2: Convert to fraction form
    82,860.40/124,290.60 = 76,445.20/x
  3. Step 3: Cross multiply
    82,860.40x = 124,290.60 × 76,445.20
  4. Step 4: Simplify right side
    82,860.40x = 9,501,419,775.12
  5. Step 5: Solve for x
    x = 9,501,419,775.12/82,860.40
  6. Step 6: Final answer
    x = 114,667.80

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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.