Home / 76,851.20-115,276.80-73,222.40

Finding the Fourth Proportional to 76,851.20, 115,276.80 and 73,222.40

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Solution

The fourth proportional to 76,851.20, 115,276.80 and 73,222.40 is: 109,833.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,851.20 : 115,276.80 = 73,222.40 : x
  2. Step 2: Convert to fraction form
    76,851.20/115,276.80 = 73,222.40/x
  3. Step 3: Cross multiply
    76,851.20x = 115,276.80 × 73,222.40
  4. Step 4: Simplify right side
    76,851.20x = 8,440,843,960.32
  5. Step 5: Solve for x
    x = 8,440,843,960.32/76,851.20
  6. Step 6: Final answer
    x = 109,833.60

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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.