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Finding the Fourth Proportional to 99,264.40, 148,896.60 and 69,715.60

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Solution

The fourth proportional to 99,264.40, 148,896.60 and 69,715.60 is: 104,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,264.40 : 148,896.60 = 69,715.60 : x
  2. Step 2: Convert to fraction form
    99,264.40/148,896.60 = 69,715.60/x
  3. Step 3: Cross multiply
    99,264.40x = 148,896.60 × 69,715.60
  4. Step 4: Simplify right side
    99,264.40x = 10,380,415,806.96
  5. Step 5: Solve for x
    x = 10,380,415,806.96/99,264.40
  6. Step 6: Final answer
    x = 104,573.40

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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.