Home / 105,108.92-145,049.38-57,360.68

Finding the Fourth Proportional to 105,108.92, 145,049.38 and 57,360.68

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Solution

The fourth proportional to 105,108.92, 145,049.38 and 57,360.68 is: 79,157.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,108.92 : 145,049.38 = 57,360.68 : x
  2. Step 2: Convert to fraction form
    105,108.92/145,049.38 = 57,360.68/x
  3. Step 3: Cross multiply
    105,108.92x = 145,049.38 × 57,360.68
  4. Step 4: Simplify right side
    105,108.92x = 8,320,131,070.38
  5. Step 5: Solve for x
    x = 8,320,131,070.38/105,108.92
  6. Step 6: Final answer
    x = 79,157.23

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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.