Home / 130,220.43-196,306.67-121,540.40

Finding the Fourth Proportional to 130,220.43, 196,306.67 and 121,540.40

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Solution

The fourth proportional to 130,220.43, 196,306.67 and 121,540.40 is: 183,221.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,220.43 : 196,306.67 = 121,540.40 : x
  2. Step 2: Convert to fraction form
    130,220.43/196,306.67 = 121,540.40/x
  3. Step 3: Cross multiply
    130,220.43x = 196,306.67 × 121,540.40
  4. Step 4: Simplify right side
    130,220.43x = 23,859,191,989.09
  5. Step 5: Solve for x
    x = 23,859,191,989.09/130,220.43
  6. Step 6: Final answer
    x = 183,221.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.