Home / 91,404.02-125,857.13-80,009.75

Finding the Fourth Proportional to 91,404.02, 125,857.13 and 80,009.75

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Solution

The fourth proportional to 91,404.02, 125,857.13 and 80,009.75 is: 110,167.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,404.02 : 125,857.13 = 80,009.75 : x
  2. Step 2: Convert to fraction form
    91,404.02/125,857.13 = 80,009.75/x
  3. Step 3: Cross multiply
    91,404.02x = 125,857.13 × 80,009.75
  4. Step 4: Simplify right side
    91,404.02x = 10,069,796,477.68
  5. Step 5: Solve for x
    x = 10,069,796,477.68/91,404.02
  6. Step 6: Final answer
    x = 110,167.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.