Home / 165,555.40-228,465.30-90,103.72

Finding the Fourth Proportional to 165,555.40, 228,465.30 and 90,103.72

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Solution

The fourth proportional to 165,555.40, 228,465.30 and 90,103.72 is: 124,342.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,555.40 : 228,465.30 = 90,103.72 : x
  2. Step 2: Convert to fraction form
    165,555.40/228,465.30 = 90,103.72/x
  3. Step 3: Cross multiply
    165,555.40x = 228,465.30 × 90,103.72
  4. Step 4: Simplify right side
    165,555.40x = 20,585,573,420.92
  5. Step 5: Solve for x
    x = 20,585,573,420.92/165,555.40
  6. Step 6: Final answer
    x = 124,342.51

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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.