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Finding the Fourth Proportional to 144,699.60, 217,020.60 and 69,819.60

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Solution

The fourth proportional to 144,699.60, 217,020.60 and 69,819.60 is: 104,715.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,699.60 : 217,020.60 = 69,819.60 : x
  2. Step 2: Convert to fraction form
    144,699.60/217,020.60 = 69,819.60/x
  3. Step 3: Cross multiply
    144,699.60x = 217,020.60 × 69,819.60
  4. Step 4: Simplify right side
    144,699.60x = 15,152,291,483.76
  5. Step 5: Solve for x
    x = 15,152,291,483.76/144,699.60
  6. Step 6: Final answer
    x = 104,715.50

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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.