Home / 142,989.18-197,243.08-89,180.78

Finding the Fourth Proportional to 142,989.18, 197,243.08 and 89,180.78

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Solution

The fourth proportional to 142,989.18, 197,243.08 and 89,180.78 is: 123,018.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,989.18 : 197,243.08 = 89,180.78 : x
  2. Step 2: Convert to fraction form
    142,989.18/197,243.08 = 89,180.78/x
  3. Step 3: Cross multiply
    142,989.18x = 197,243.08 × 89,180.78
  4. Step 4: Simplify right side
    142,989.18x = 17,590,290,291.88
  5. Step 5: Solve for x
    x = 17,590,290,291.88/142,989.18
  6. Step 6: Final answer
    x = 123,018.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.