Home / 105,711.55-145,882.55-57,313.85

Finding the Fourth Proportional to 105,711.55, 145,882.55 and 57,313.85

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Solution

The fourth proportional to 105,711.55, 145,882.55 and 57,313.85 is: 79,093.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,711.55 : 145,882.55 = 57,313.85 : x
  2. Step 2: Convert to fraction form
    105,711.55/145,882.55 = 57,313.85/x
  3. Step 3: Cross multiply
    105,711.55x = 145,882.55 × 57,313.85
  4. Step 4: Simplify right side
    105,711.55x = 8,361,090,002.19
  5. Step 5: Solve for x
    x = 8,361,090,002.19/105,711.55
  6. Step 6: Final answer
    x = 79,093.44

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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.