Home / 135,787.96-187,542.90-89,428.07

Finding the Fourth Proportional to 135,787.96, 187,542.90 and 89,428.07

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Solution

The fourth proportional to 135,787.96, 187,542.90 and 89,428.07 is: 123,513.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,787.96 : 187,542.90 = 89,428.07 : x
  2. Step 2: Convert to fraction form
    135,787.96/187,542.90 = 89,428.07/x
  3. Step 3: Cross multiply
    135,787.96x = 187,542.90 × 89,428.07
  4. Step 4: Simplify right side
    135,787.96x = 16,771,599,221.27
  5. Step 5: Solve for x
    x = 16,771,599,221.27/135,787.96
  6. Step 6: Final answer
    x = 123,513.16

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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.