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Finding the Fourth Proportional to 88,908.30, 133,362.45 and 82,428.30

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Solution

The fourth proportional to 88,908.30, 133,362.45 and 82,428.30 is: 123,642.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,908.30 : 133,362.45 = 82,428.30 : x
  2. Step 2: Convert to fraction form
    88,908.30/133,362.45 = 82,428.30/x
  3. Step 3: Cross multiply
    88,908.30x = 133,362.45 × 82,428.30
  4. Step 4: Simplify right side
    88,908.30x = 10,992,840,037.34
  5. Step 5: Solve for x
    x = 10,992,840,037.34/88,908.30
  6. Step 6: Final answer
    x = 123,642.45

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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.