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Finding the Fourth Proportional to 145,298.56, 217,895.28 and 51,785.68

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Solution

The fourth proportional to 145,298.56, 217,895.28 and 51,785.68 is: 77,659.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,298.56 : 217,895.28 = 51,785.68 : x
  2. Step 2: Convert to fraction form
    145,298.56/217,895.28 = 51,785.68/x
  3. Step 3: Cross multiply
    145,298.56x = 217,895.28 × 51,785.68
  4. Step 4: Simplify right side
    145,298.56x = 11,283,855,243.59
  5. Step 5: Solve for x
    x = 11,283,855,243.59/145,298.56
  6. Step 6: Final answer
    x = 77,659.79

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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.