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Finding the Fourth Proportional to 144,037.65, 198,762.12 and 79,503.87

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Solution

The fourth proportional to 144,037.65, 198,762.12 and 79,503.87 is: 109,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,037.65 : 198,762.12 = 79,503.87 : x
  2. Step 2: Convert to fraction form
    144,037.65/198,762.12 = 79,503.87/x
  3. Step 3: Cross multiply
    144,037.65x = 198,762.12 × 79,503.87
  4. Step 4: Simplify right side
    144,037.65x = 15,802,357,749.40
  5. Step 5: Solve for x
    x = 15,802,357,749.40/144,037.65
  6. Step 6: Final answer
    x = 109,709.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.