Home / 120,229.55-165,907.63-66,513.42

Finding the Fourth Proportional to 120,229.55, 165,907.63 and 66,513.42

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Solution

The fourth proportional to 120,229.55, 165,907.63 and 66,513.42 is: 91,783.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,229.55 : 165,907.63 = 66,513.42 : x
  2. Step 2: Convert to fraction form
    120,229.55/165,907.63 = 66,513.42/x
  3. Step 3: Cross multiply
    120,229.55x = 165,907.63 × 66,513.42
  4. Step 4: Simplify right side
    120,229.55x = 11,035,083,045.86
  5. Step 5: Solve for x
    x = 11,035,083,045.86/120,229.55
  6. Step 6: Final answer
    x = 91,783.45

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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.