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Finding the Fourth Proportional to 165,779.31, 228,775.49 and 90,327.81

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Solution

The fourth proportional to 165,779.31, 228,775.49 and 90,327.81 is: 124,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,779.31 : 228,775.49 = 90,327.81 : x
  2. Step 2: Convert to fraction form
    165,779.31/228,775.49 = 90,327.81/x
  3. Step 3: Cross multiply
    165,779.31x = 228,775.49 × 90,327.81
  4. Step 4: Simplify right side
    165,779.31x = 20,664,788,993.38
  5. Step 5: Solve for x
    x = 20,664,788,993.38/165,779.31
  6. Step 6: Final answer
    x = 124,652.40

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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.