Home / 105,119.33-145,064.79-57,372.66

Finding the Fourth Proportional to 105,119.33, 145,064.79 and 57,372.66

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Solution

The fourth proportional to 105,119.33, 145,064.79 and 57,372.66 is: 79,174.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,119.33 : 145,064.79 = 57,372.66 : x
  2. Step 2: Convert to fraction form
    105,119.33/145,064.79 = 57,372.66/x
  3. Step 3: Cross multiply
    105,119.33x = 145,064.79 × 57,372.66
  4. Step 4: Simplify right side
    105,119.33x = 8,322,752,874.64
  5. Step 5: Solve for x
    x = 8,322,752,874.64/105,119.33
  6. Step 6: Final answer
    x = 79,174.34

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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.