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Finding the Fourth Proportional to 145,754.57, 218,137.66 and 89,629.94

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Solution

The fourth proportional to 145,754.57, 218,137.66 and 89,629.94 is: 134,141.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,754.57 : 218,137.66 = 89,629.94 : x
  2. Step 2: Convert to fraction form
    145,754.57/218,137.66 = 89,629.94/x
  3. Step 3: Cross multiply
    145,754.57x = 218,137.66 × 89,629.94
  4. Step 4: Simplify right side
    145,754.57x = 19,551,665,698.81
  5. Step 5: Solve for x
    x = 19,551,665,698.81/145,754.57
  6. Step 6: Final answer
    x = 134,141.01

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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.