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Finding the Fourth Proportional to 143,130.30, 214,511.85 and 79,950.30

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Solution

The fourth proportional to 143,130.30, 214,511.85 and 79,950.30 is: 119,822.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,130.30 : 214,511.85 = 79,950.30 : x
  2. Step 2: Convert to fraction form
    143,130.30/214,511.85 = 79,950.30/x
  3. Step 3: Cross multiply
    143,130.30x = 214,511.85 × 79,950.30
  4. Step 4: Simplify right side
    143,130.30x = 17,150,286,761.06
  5. Step 5: Solve for x
    x = 17,150,286,761.06/143,130.30
  6. Step 6: Final answer
    x = 119,822.89

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1.5x scale

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.