Home / 82,816.80-124,225.20-74,781.60

Finding the Fourth Proportional to 82,816.80, 124,225.20 and 74,781.60

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Solution

The fourth proportional to 82,816.80, 124,225.20 and 74,781.60 is: 112,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,816.80 : 124,225.20 = 74,781.60 : x
  2. Step 2: Convert to fraction form
    82,816.80/124,225.20 = 74,781.60/x
  3. Step 3: Cross multiply
    82,816.80x = 124,225.20 × 74,781.60
  4. Step 4: Simplify right side
    82,816.80x = 9,289,759,216.32
  5. Step 5: Solve for x
    x = 9,289,759,216.32/82,816.80
  6. Step 6: Final answer
    x = 112,172.40

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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.