Home / 165,864.12-228,895.80-90,412.56

Finding the Fourth Proportional to 165,864.12, 228,895.80 and 90,412.56

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Solution

The fourth proportional to 165,864.12, 228,895.80 and 90,412.56 is: 124,771.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,864.12 : 228,895.80 = 90,412.56 : x
  2. Step 2: Convert to fraction form
    165,864.12/228,895.80 = 90,412.56/x
  3. Step 3: Cross multiply
    165,864.12x = 228,895.80 × 90,412.56
  4. Step 4: Simplify right side
    165,864.12x = 20,695,055,251.25
  5. Step 5: Solve for x
    x = 20,695,055,251.25/165,864.12
  6. Step 6: Final answer
    x = 124,771.14

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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.