Home / 105,107.24-145,047.20-57,359.54

Finding the Fourth Proportional to 105,107.24, 145,047.20 and 57,359.54

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Solution

The fourth proportional to 105,107.24, 145,047.20 and 57,359.54 is: 79,155.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,107.24 : 145,047.20 = 57,359.54 : x
  2. Step 2: Convert to fraction form
    105,107.24/145,047.20 = 57,359.54/x
  3. Step 3: Cross multiply
    105,107.24x = 145,047.20 × 57,359.54
  4. Step 4: Simplify right side
    105,107.24x = 8,319,840,670.29
  5. Step 5: Solve for x
    x = 8,319,840,670.29/105,107.24
  6. Step 6: Final answer
    x = 79,155.73

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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.