Home / 130,902.39-180,662.22-79,904.43

Finding the Fourth Proportional to 130,902.39, 180,662.22 and 79,904.43

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Solution

The fourth proportional to 130,902.39, 180,662.22 and 79,904.43 is: 110,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,902.39 : 180,662.22 = 79,904.43 : x
  2. Step 2: Convert to fraction form
    130,902.39/180,662.22 = 79,904.43/x
  3. Step 3: Cross multiply
    130,902.39x = 180,662.22 × 79,904.43
  4. Step 4: Simplify right side
    130,902.39x = 14,435,711,711.63
  5. Step 5: Solve for x
    x = 14,435,711,711.63/130,902.39
  6. Step 6: Final answer
    x = 110,278.44

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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.