Home / 128,896.98-193,331.15-40,143.06

Finding the Fourth Proportional to 128,896.98, 193,331.15 and 40,143.06

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Solution

The fourth proportional to 128,896.98, 193,331.15 and 40,143.06 is: 60,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,896.98 : 193,331.15 = 40,143.06 : x
  2. Step 2: Convert to fraction form
    128,896.98/193,331.15 = 40,143.06/x
  3. Step 3: Cross multiply
    128,896.98x = 193,331.15 × 40,143.06
  4. Step 4: Simplify right side
    128,896.98x = 7,760,903,753.60
  5. Step 5: Solve for x
    x = 7,760,903,753.60/128,896.98
  6. Step 6: Final answer
    x = 60,210.13

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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.