Home / 128,996.16-193,487.40-40,239.49

Finding the Fourth Proportional to 128,996.16, 193,487.40 and 40,239.49

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Solution

The fourth proportional to 128,996.16, 193,487.40 and 40,239.49 is: 60,357.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,996.16 : 193,487.40 = 40,239.49 : x
  2. Step 2: Convert to fraction form
    128,996.16/193,487.40 = 40,239.49/x
  3. Step 3: Cross multiply
    128,996.16x = 193,487.40 × 40,239.49
  4. Step 4: Simplify right side
    128,996.16x = 7,785,834,297.43
  5. Step 5: Solve for x
    x = 7,785,834,297.43/128,996.16
  6. Step 6: Final answer
    x = 60,357.10

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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.