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Finding the Fourth Proportional to 144,607.68, 217,051.50 and 69,780.40

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Solution

The fourth proportional to 144,607.68, 217,051.50 and 69,780.40 is: 104,738.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,607.68 : 217,051.50 = 69,780.40 : x
  2. Step 2: Convert to fraction form
    144,607.68/217,051.50 = 69,780.40/x
  3. Step 3: Cross multiply
    144,607.68x = 217,051.50 × 69,780.40
  4. Step 4: Simplify right side
    144,607.68x = 15,145,940,490.60
  5. Step 5: Solve for x
    x = 15,145,940,490.60/144,607.68
  6. Step 6: Final answer
    x = 104,738.15

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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.