Home / 143,869.47-198,476.87-137,199.12

Finding the Fourth Proportional to 143,869.47, 198,476.87 and 137,199.12

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Solution

The fourth proportional to 143,869.47, 198,476.87 and 137,199.12 is: 189,274.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,869.47 : 198,476.87 = 137,199.12 : x
  2. Step 2: Convert to fraction form
    143,869.47/198,476.87 = 137,199.12/x
  3. Step 3: Cross multiply
    143,869.47x = 198,476.87 × 137,199.12
  4. Step 4: Simplify right side
    143,869.47x = 27,230,851,904.35
  5. Step 5: Solve for x
    x = 27,230,851,904.35/143,869.47
  6. Step 6: Final answer
    x = 189,274.71

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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.