Home / 129,013.44-193,420.80-40,214.40

Finding the Fourth Proportional to 129,013.44, 193,420.80 and 40,214.40

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Solution

The fourth proportional to 129,013.44, 193,420.80 and 40,214.40 is: 60,290.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,013.44 : 193,420.80 = 40,214.40 : x
  2. Step 2: Convert to fraction form
    129,013.44/193,420.80 = 40,214.40/x
  3. Step 3: Cross multiply
    129,013.44x = 193,420.80 × 40,214.40
  4. Step 4: Simplify right side
    129,013.44x = 7,778,301,419.52
  5. Step 5: Solve for x
    x = 7,778,301,419.52/129,013.44
  6. Step 6: Final answer
    x = 60,290.63

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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.