Home / 165,859.20-228,885.12-90,407.70

Finding the Fourth Proportional to 165,859.20, 228,885.12 and 90,407.70

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Solution

The fourth proportional to 165,859.20, 228,885.12 and 90,407.70 is: 124,762.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,859.20 : 228,885.12 = 90,407.70 : x
  2. Step 2: Convert to fraction form
    165,859.20/228,885.12 = 90,407.70/x
  3. Step 3: Cross multiply
    165,859.20x = 228,885.12 × 90,407.70
  4. Step 4: Simplify right side
    165,859.20x = 20,692,977,263.42
  5. Step 5: Solve for x
    x = 20,692,977,263.42/165,859.20
  6. Step 6: Final answer
    x = 124,762.31

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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.