Home / 120,636.42-166,420.35-88,320.12

Finding the Fourth Proportional to 120,636.42, 166,420.35 and 88,320.12

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Solution

The fourth proportional to 120,636.42, 166,420.35 and 88,320.12 is: 121,839.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,636.42 : 166,420.35 = 88,320.12 : x
  2. Step 2: Convert to fraction form
    120,636.42/166,420.35 = 88,320.12/x
  3. Step 3: Cross multiply
    120,636.42x = 166,420.35 × 88,320.12
  4. Step 4: Simplify right side
    120,636.42x = 14,698,265,282.44
  5. Step 5: Solve for x
    x = 14,698,265,282.44/120,636.42
  6. Step 6: Final answer
    x = 121,839.37

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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.