Home / 143,387.55-215,110.04-80,297.39

Finding the Fourth Proportional to 143,387.55, 215,110.04 and 80,297.39

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Solution

The fourth proportional to 143,387.55, 215,110.04 and 80,297.39 is: 120,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,387.55 : 215,110.04 = 80,297.39 : x
  2. Step 2: Convert to fraction form
    143,387.55/215,110.04 = 80,297.39/x
  3. Step 3: Cross multiply
    143,387.55x = 215,110.04 × 80,297.39
  4. Step 4: Simplify right side
    143,387.55x = 17,272,774,911.08
  5. Step 5: Solve for x
    x = 17,272,774,911.08/143,387.55
  6. Step 6: Final answer
    x = 120,462.17

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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.