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Finding the Fourth Proportional to 143,117.80, 214,493.10 and 79,937.80

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Solution

The fourth proportional to 143,117.80, 214,493.10 and 79,937.80 is: 119,804.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,117.80 : 214,493.10 = 79,937.80 : x
  2. Step 2: Convert to fraction form
    143,117.80/214,493.10 = 79,937.80/x
  3. Step 3: Cross multiply
    143,117.80x = 214,493.10 × 79,937.80
  4. Step 4: Simplify right side
    143,117.80x = 17,146,106,529.18
  5. Step 5: Solve for x
    x = 17,146,106,529.18/143,117.80
  6. Step 6: Final answer
    x = 119,804.15

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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.