Home / 165,782.28-228,779.55-90,330.78

Finding the Fourth Proportional to 165,782.28, 228,779.55 and 90,330.78

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Solution

The fourth proportional to 165,782.28, 228,779.55 and 90,330.78 is: 124,656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,782.28 : 228,779.55 = 90,330.78 : x
  2. Step 2: Convert to fraction form
    165,782.28/228,779.55 = 90,330.78/x
  3. Step 3: Cross multiply
    165,782.28x = 228,779.55 × 90,330.78
  4. Step 4: Simplify right side
    165,782.28x = 20,665,835,771.50
  5. Step 5: Solve for x
    x = 20,665,835,771.50/165,782.28
  6. Step 6: Final answer
    x = 124,656.48

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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.