Home / 76,895.20-115,342.80-73,266.40

Finding the Fourth Proportional to 76,895.20, 115,342.80 and 73,266.40

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Solution

The fourth proportional to 76,895.20, 115,342.80 and 73,266.40 is: 109,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,895.20 : 115,342.80 = 73,266.40 : x
  2. Step 2: Convert to fraction form
    76,895.20/115,342.80 = 73,266.40/x
  3. Step 3: Cross multiply
    76,895.20x = 115,342.80 × 73,266.40
  4. Step 4: Simplify right side
    76,895.20x = 8,450,751,721.92
  5. Step 5: Solve for x
    x = 8,450,751,721.92/76,895.20
  6. Step 6: Final answer
    x = 109,899.60

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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.