Home / 145,719.86-218,299.35-89,395.49

Finding the Fourth Proportional to 145,719.86, 218,299.35 and 89,395.49

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Solution

The fourth proportional to 145,719.86, 218,299.35 and 89,395.49 is: 133,921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,719.86 : 218,299.35 = 89,395.49 : x
  2. Step 2: Convert to fraction form
    145,719.86/218,299.35 = 89,395.49/x
  3. Step 3: Cross multiply
    145,719.86x = 218,299.35 × 89,395.49
  4. Step 4: Simplify right side
    145,719.86x = 19,514,976,912.95
  5. Step 5: Solve for x
    x = 19,514,976,912.95/145,719.86
  6. Step 6: Final answer
    x = 133,921.19

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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.