Home / 142,531.86-213,731.91-80,202.36

Finding the Fourth Proportional to 142,531.86, 213,731.91 and 80,202.36

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Solution

The fourth proportional to 142,531.86, 213,731.91 and 80,202.36 is: 120,266.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,531.86 : 213,731.91 = 80,202.36 : x
  2. Step 2: Convert to fraction form
    142,531.86/213,731.91 = 80,202.36/x
  3. Step 3: Cross multiply
    142,531.86x = 213,731.91 × 80,202.36
  4. Step 4: Simplify right side
    142,531.86x = 17,141,803,589.31
  5. Step 5: Solve for x
    x = 17,141,803,589.31/142,531.86
  6. Step 6: Final answer
    x = 120,266.47

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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.