Home / 129,243.96-178,353.54-71,883.10

Finding the Fourth Proportional to 129,243.96, 178,353.54 and 71,883.10

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Solution

The fourth proportional to 129,243.96, 178,353.54 and 71,883.10 is: 99,196.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,243.96 : 178,353.54 = 71,883.10 : x
  2. Step 2: Convert to fraction form
    129,243.96/178,353.54 = 71,883.10/x
  3. Step 3: Cross multiply
    129,243.96x = 178,353.54 × 71,883.10
  4. Step 4: Simplify right side
    129,243.96x = 12,820,605,351.17
  5. Step 5: Solve for x
    x = 12,820,605,351.17/129,243.96
  6. Step 6: Final answer
    x = 99,196.94

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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.