Home / 129,193.41-178,301.67-71,838.45

Finding the Fourth Proportional to 129,193.41, 178,301.67 and 71,838.45

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Solution

The fourth proportional to 129,193.41, 178,301.67 and 71,838.45 is: 99,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,193.41 : 178,301.67 = 71,838.45 : x
  2. Step 2: Convert to fraction form
    129,193.41/178,301.67 = 71,838.45/x
  3. Step 3: Cross multiply
    129,193.41x = 178,301.67 × 71,838.45
  4. Step 4: Simplify right side
    129,193.41x = 12,808,915,605.21
  5. Step 5: Solve for x
    x = 12,808,915,605.21/129,193.41
  6. Step 6: Final answer
    x = 99,145.27

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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.