Home / 81,133.17-112,040.46-76,715.43

Finding the Fourth Proportional to 81,133.17, 112,040.46 and 76,715.43

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Solution

The fourth proportional to 81,133.17, 112,040.46 and 76,715.43 is: 105,939.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,133.17 : 112,040.46 = 76,715.43 : x
  2. Step 2: Convert to fraction form
    81,133.17/112,040.46 = 76,715.43/x
  3. Step 3: Cross multiply
    81,133.17x = 112,040.46 × 76,715.43
  4. Step 4: Simplify right side
    81,133.17x = 8,595,232,066.30
  5. Step 5: Solve for x
    x = 8,595,232,066.30/81,133.17
  6. Step 6: Final answer
    x = 105,939.80

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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.