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Finding the Fourth Proportional to 165,877.88, 228,911.47 and 90,426.38

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Solution

The fourth proportional to 165,877.88, 228,911.47 and 90,426.38 is: 124,788.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,877.88 : 228,911.47 = 90,426.38 : x
  2. Step 2: Convert to fraction form
    165,877.88/228,911.47 = 90,426.38/x
  3. Step 3: Cross multiply
    165,877.88x = 228,911.47 × 90,426.38
  4. Step 4: Simplify right side
    165,877.88x = 20,699,634,201.96
  5. Step 5: Solve for x
    x = 20,699,634,201.96/165,877.88
  6. Step 6: Final answer
    x = 124,788.40

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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.