Home / 165,890.16-228,929.76-90,439.20

Finding the Fourth Proportional to 165,890.16, 228,929.76 and 90,439.20

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Solution

The fourth proportional to 165,890.16, 228,929.76 and 90,439.20 is: 124,806.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,890.16 : 228,929.76 = 90,439.20 : x
  2. Step 2: Convert to fraction form
    165,890.16/228,929.76 = 90,439.20/x
  3. Step 3: Cross multiply
    165,890.16x = 228,929.76 × 90,439.20
  4. Step 4: Simplify right side
    165,890.16x = 20,704,224,350.59
  5. Step 5: Solve for x
    x = 20,704,224,350.59/165,890.16
  6. Step 6: Final answer
    x = 124,806.83

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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.