Home / 143,285.76-215,094.69-76,855.64

Finding the Fourth Proportional to 143,285.76, 215,094.69 and 76,855.64

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Solution

The fourth proportional to 143,285.76, 215,094.69 and 76,855.64 is: 115,372.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,285.76 : 215,094.69 = 76,855.64 : x
  2. Step 2: Convert to fraction form
    143,285.76/215,094.69 = 76,855.64/x
  3. Step 3: Cross multiply
    143,285.76x = 215,094.69 × 76,855.64
  4. Step 4: Simplify right side
    143,285.76x = 16,531,238,985.08
  5. Step 5: Solve for x
    x = 16,531,238,985.08/143,285.76
  6. Step 6: Final answer
    x = 115,372.52

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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.