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Finding the Fourth Proportional to 98,601.31, 147,901.96 and 90,047.71

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Solution

The fourth proportional to 98,601.31, 147,901.96 and 90,047.71 is: 135,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,601.31 : 147,901.96 = 90,047.71 : x
  2. Step 2: Convert to fraction form
    98,601.31/147,901.96 = 90,047.71/x
  3. Step 3: Cross multiply
    98,601.31x = 147,901.96 × 90,047.71
  4. Step 4: Simplify right side
    98,601.31x = 13,318,232,063.00
  5. Step 5: Solve for x
    x = 13,318,232,063.00/98,601.31
  6. Step 6: Final answer
    x = 135,071.56

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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.