Home / 128,995.20-193,233.60-73,526.40

Finding the Fourth Proportional to 128,995.20, 193,233.60 and 73,526.40

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Solution

The fourth proportional to 128,995.20, 193,233.60 and 73,526.40 is: 110,141.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,995.20 : 193,233.60 = 73,526.40 : x
  2. Step 2: Convert to fraction form
    128,995.20/193,233.60 = 73,526.40/x
  3. Step 3: Cross multiply
    128,995.20x = 193,233.60 × 73,526.40
  4. Step 4: Simplify right side
    128,995.20x = 14,207,770,967.04
  5. Step 5: Solve for x
    x = 14,207,770,967.04/128,995.20
  6. Step 6: Final answer
    x = 110,141.86

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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.