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Finding the Fourth Proportional to 145,346.70, 217,501.65 and 100,764.30

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Solution

The fourth proportional to 145,346.70, 217,501.65 and 100,764.30 is: 150,787.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,346.70 : 217,501.65 = 100,764.30 : x
  2. Step 2: Convert to fraction form
    145,346.70/217,501.65 = 100,764.30/x
  3. Step 3: Cross multiply
    145,346.70x = 217,501.65 × 100,764.30
  4. Step 4: Simplify right side
    145,346.70x = 21,916,401,511.10
  5. Step 5: Solve for x
    x = 21,916,401,511.10/145,346.70
  6. Step 6: Final answer
    x = 150,787.06

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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.