Home / 142,398.44-213,630.05-75,803.48

Finding the Fourth Proportional to 142,398.44, 213,630.05 and 75,803.48

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Solution

The fourth proportional to 142,398.44, 213,630.05 and 75,803.48 is: 113,722.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,398.44 : 213,630.05 = 75,803.48 : x
  2. Step 2: Convert to fraction form
    142,398.44/213,630.05 = 75,803.48/x
  3. Step 3: Cross multiply
    142,398.44x = 213,630.05 × 75,803.48
  4. Step 4: Simplify right side
    142,398.44x = 16,193,900,343.93
  5. Step 5: Solve for x
    x = 16,193,900,343.93/142,398.44
  6. Step 6: Final answer
    x = 113,722.46

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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.