Home / 152,198.28-209,986.02-91,787.40

Finding the Fourth Proportional to 152,198.28, 209,986.02 and 91,787.40

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Solution

The fourth proportional to 152,198.28, 209,986.02 and 91,787.40 is: 126,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,198.28 : 209,986.02 = 91,787.40 : x
  2. Step 2: Convert to fraction form
    152,198.28/209,986.02 = 91,787.40/x
  3. Step 3: Cross multiply
    152,198.28x = 209,986.02 × 91,787.40
  4. Step 4: Simplify right side
    152,198.28x = 19,274,070,812.15
  5. Step 5: Solve for x
    x = 19,274,070,812.15/152,198.28
  6. Step 6: Final answer
    x = 126,637.90

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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.