Home / 124,080.80-186,121.20-76,841.60

Finding the Fourth Proportional to 124,080.80, 186,121.20 and 76,841.60

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Solution

The fourth proportional to 124,080.80, 186,121.20 and 76,841.60 is: 115,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,080.80 : 186,121.20 = 76,841.60 : x
  2. Step 2: Convert to fraction form
    124,080.80/186,121.20 = 76,841.60/x
  3. Step 3: Cross multiply
    124,080.80x = 186,121.20 × 76,841.60
  4. Step 4: Simplify right side
    124,080.80x = 14,301,850,801.92
  5. Step 5: Solve for x
    x = 14,301,850,801.92/124,080.80
  6. Step 6: Final answer
    x = 115,262.40

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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.