Home / 105,691.63-145,853.85-57,945.37

Finding the Fourth Proportional to 105,691.63, 145,853.85 and 57,945.37

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Solution

The fourth proportional to 105,691.63, 145,853.85 and 57,945.37 is: 79,964.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,691.63 : 145,853.85 = 57,945.37 : x
  2. Step 2: Convert to fraction form
    105,691.63/145,853.85 = 57,945.37/x
  3. Step 3: Cross multiply
    105,691.63x = 145,853.85 × 57,945.37
  4. Step 4: Simplify right side
    105,691.63x = 8,451,555,304.17
  5. Step 5: Solve for x
    x = 8,451,555,304.17/105,691.63
  6. Step 6: Final answer
    x = 79,964.28

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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.