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Finding the Fourth Proportional to 103,640.05, 155,460.08 and 101,336.05

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Solution

The fourth proportional to 103,640.05, 155,460.08 and 101,336.05 is: 152,004.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.05 : 155,460.08 = 101,336.05 : x
  2. Step 2: Convert to fraction form
    103,640.05/155,460.08 = 101,336.05/x
  3. Step 3: Cross multiply
    103,640.05x = 155,460.08 × 101,336.05
  4. Step 4: Simplify right side
    103,640.05x = 15,753,710,439.88
  5. Step 5: Solve for x
    x = 15,753,710,439.88/103,640.05
  6. Step 6: Final answer
    x = 152,004.08

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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.