Home / 145,519.12-200,644.62-99,600.90

Finding the Fourth Proportional to 145,519.12, 200,644.62 and 99,600.90

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Solution

The fourth proportional to 145,519.12, 200,644.62 and 99,600.90 is: 137,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,519.12 : 200,644.62 = 99,600.90 : x
  2. Step 2: Convert to fraction form
    145,519.12/200,644.62 = 99,600.90/x
  3. Step 3: Cross multiply
    145,519.12x = 200,644.62 × 99,600.90
  4. Step 4: Simplify right side
    145,519.12x = 19,984,384,732.16
  5. Step 5: Solve for x
    x = 19,984,384,732.16/145,519.12
  6. Step 6: Final answer
    x = 137,331.68

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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.