Home / 105,667.64-145,825.08-57,920.96

Finding the Fourth Proportional to 105,667.64, 145,825.08 and 57,920.96

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Solution

The fourth proportional to 105,667.64, 145,825.08 and 57,920.96 is: 79,932.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,667.64 : 145,825.08 = 57,920.96 : x
  2. Step 2: Convert to fraction form
    105,667.64/145,825.08 = 57,920.96/x
  3. Step 3: Cross multiply
    105,667.64x = 145,825.08 × 57,920.96
  4. Step 4: Simplify right side
    105,667.64x = 8,446,328,625.68
  5. Step 5: Solve for x
    x = 8,446,328,625.68/105,667.64
  6. Step 6: Final answer
    x = 79,932.97

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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.