Home / 145,753.11-218,135.84-89,628.76

Finding the Fourth Proportional to 145,753.11, 218,135.84 and 89,628.76

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Solution

The fourth proportional to 145,753.11, 218,135.84 and 89,628.76 is: 134,139.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,753.11 : 218,135.84 = 89,628.76 : x
  2. Step 2: Convert to fraction form
    145,753.11/218,135.84 = 89,628.76/x
  3. Step 3: Cross multiply
    145,753.11x = 218,135.84 × 89,628.76
  4. Step 4: Simplify right side
    145,753.11x = 19,551,244,850.76
  5. Step 5: Solve for x
    x = 19,551,244,850.76/145,753.11
  6. Step 6: Final answer
    x = 134,139.47

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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.