Home / 105,194.03-145,168.91-57,448.78

Finding the Fourth Proportional to 105,194.03, 145,168.91 and 57,448.78

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Solution

The fourth proportional to 105,194.03, 145,168.91 and 57,448.78 is: 79,279.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,194.03 : 145,168.91 = 57,448.78 : x
  2. Step 2: Convert to fraction form
    105,194.03/145,168.91 = 57,448.78/x
  3. Step 3: Cross multiply
    105,194.03x = 145,168.91 × 57,448.78
  4. Step 4: Simplify right side
    105,194.03x = 8,339,776,338.70
  5. Step 5: Solve for x
    x = 8,339,776,338.70/105,194.03
  6. Step 6: Final answer
    x = 79,279.94

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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.