Home / 120,154.30-165,806.24-66,436.10

Finding the Fourth Proportional to 120,154.30, 165,806.24 and 66,436.10

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Solution

The fourth proportional to 120,154.30, 165,806.24 and 66,436.10 is: 91,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,154.30 : 165,806.24 = 66,436.10 : x
  2. Step 2: Convert to fraction form
    120,154.30/165,806.24 = 66,436.10/x
  3. Step 3: Cross multiply
    120,154.30x = 165,806.24 × 66,436.10
  4. Step 4: Simplify right side
    120,154.30x = 11,015,519,941.26
  5. Step 5: Solve for x
    x = 11,015,519,941.26/120,154.30
  6. Step 6: Final answer
    x = 91,678.12

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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.