Home / 143,412.32-215,118.25-68,304.67

Finding the Fourth Proportional to 143,412.32, 215,118.25 and 68,304.67

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Solution

The fourth proportional to 143,412.32, 215,118.25 and 68,304.67 is: 102,456.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,412.32 : 215,118.25 = 68,304.67 : x
  2. Step 2: Convert to fraction form
    143,412.32/215,118.25 = 68,304.67/x
  3. Step 3: Cross multiply
    143,412.32x = 215,118.25 × 68,304.67
  4. Step 4: Simplify right side
    143,412.32x = 14,693,580,368.67
  5. Step 5: Solve for x
    x = 14,693,580,368.67/143,412.32
  6. Step 6: Final answer
    x = 102,456.89

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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.