Home / 81,012.15-121,518.23-64,099.35

Finding the Fourth Proportional to 81,012.15, 121,518.23 and 64,099.35

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Solution

The fourth proportional to 81,012.15, 121,518.23 and 64,099.35 is: 96,149.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,012.15 : 121,518.23 = 64,099.35 : x
  2. Step 2: Convert to fraction form
    81,012.15/121,518.23 = 64,099.35/x
  3. Step 3: Cross multiply
    81,012.15x = 121,518.23 × 64,099.35
  4. Step 4: Simplify right side
    81,012.15x = 7,789,239,235.65
  5. Step 5: Solve for x
    x = 7,789,239,235.65/81,012.15
  6. Step 6: Final answer
    x = 96,149.03

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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.