Home / 120,248.12-165,942.60-66,535.40

Finding the Fourth Proportional to 120,248.12, 165,942.60 and 66,535.40

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Solution

The fourth proportional to 120,248.12, 165,942.60 and 66,535.40 is: 91,818.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,248.12 : 165,942.60 = 66,535.40 : x
  2. Step 2: Convert to fraction form
    120,248.12/165,942.60 = 66,535.40/x
  3. Step 3: Cross multiply
    120,248.12x = 165,942.60 × 66,535.40
  4. Step 4: Simplify right side
    120,248.12x = 11,041,057,268.04
  5. Step 5: Solve for x
    x = 11,041,057,268.04/120,248.12
  6. Step 6: Final answer
    x = 91,818.96

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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.