Home / 86,563.24-129,844.86-78,890.92

Finding the Fourth Proportional to 86,563.24, 129,844.86 and 78,890.92

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Solution

The fourth proportional to 86,563.24, 129,844.86 and 78,890.92 is: 118,336.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,563.24 : 129,844.86 = 78,890.92 : x
  2. Step 2: Convert to fraction form
    86,563.24/129,844.86 = 78,890.92/x
  3. Step 3: Cross multiply
    86,563.24x = 129,844.86 × 78,890.92
  4. Step 4: Simplify right side
    86,563.24x = 10,243,580,462.67
  5. Step 5: Solve for x
    x = 10,243,580,462.67/86,563.24
  6. Step 6: Final answer
    x = 118,336.38

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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.