Home / 109,613.70-164,420.55-80,089.20

Finding the Fourth Proportional to 109,613.70, 164,420.55 and 80,089.20

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Solution

The fourth proportional to 109,613.70, 164,420.55 and 80,089.20 is: 120,133.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,613.70 : 164,420.55 = 80,089.20 : x
  2. Step 2: Convert to fraction form
    109,613.70/164,420.55 = 80,089.20/x
  3. Step 3: Cross multiply
    109,613.70x = 164,420.55 × 80,089.20
  4. Step 4: Simplify right side
    109,613.70x = 13,168,310,313.06
  5. Step 5: Solve for x
    x = 13,168,310,313.06/109,613.70
  6. Step 6: Final answer
    x = 120,133.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.