Home / 145,057.92-200,179.40-81,395.57

Finding the Fourth Proportional to 145,057.92, 200,179.40 and 81,395.57

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Solution

The fourth proportional to 145,057.92, 200,179.40 and 81,395.57 is: 112,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,057.92 : 200,179.40 = 81,395.57 : x
  2. Step 2: Convert to fraction form
    145,057.92/200,179.40 = 81,395.57/x
  3. Step 3: Cross multiply
    145,057.92x = 200,179.40 × 81,395.57
  4. Step 4: Simplify right side
    145,057.92x = 16,293,714,957.38
  5. Step 5: Solve for x
    x = 16,293,714,957.38/145,057.92
  6. Step 6: Final answer
    x = 112,325.58

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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.