Home / 165,659.58-228,615.75-90,210.78

Finding the Fourth Proportional to 165,659.58, 228,615.75 and 90,210.78

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Solution

The fourth proportional to 165,659.58, 228,615.75 and 90,210.78 is: 124,493.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,659.58 : 228,615.75 = 90,210.78 : x
  2. Step 2: Convert to fraction form
    165,659.58/228,615.75 = 90,210.78/x
  3. Step 3: Cross multiply
    165,659.58x = 228,615.75 × 90,210.78
  4. Step 4: Simplify right side
    165,659.58x = 20,623,605,127.79
  5. Step 5: Solve for x
    x = 20,623,605,127.79/165,659.58
  6. Step 6: Final answer
    x = 124,493.89

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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.