Home / 109,613.20-164,419.80-80,088.70

Finding the Fourth Proportional to 109,613.20, 164,419.80 and 80,088.70

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Solution

The fourth proportional to 109,613.20, 164,419.80 and 80,088.70 is: 120,133.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,613.20 : 164,419.80 = 80,088.70 : x
  2. Step 2: Convert to fraction form
    109,613.20/164,419.80 = 80,088.70/x
  3. Step 3: Cross multiply
    109,613.20x = 164,419.80 × 80,088.70
  4. Step 4: Simplify right side
    109,613.20x = 13,168,168,036.26
  5. Step 5: Solve for x
    x = 13,168,168,036.26/109,613.20
  6. Step 6: Final answer
    x = 120,133.05

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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.