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Finding the Fourth Proportional to 147,557.82, 220,878.55 and 79,921.87

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Solution

The fourth proportional to 147,557.82, 220,878.55 and 79,921.87 is: 119,634.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,557.82 : 220,878.55 = 79,921.87 : x
  2. Step 2: Convert to fraction form
    147,557.82/220,878.55 = 79,921.87/x
  3. Step 3: Cross multiply
    147,557.82x = 220,878.55 × 79,921.87
  4. Step 4: Simplify right side
    147,557.82x = 17,653,026,306.59
  5. Step 5: Solve for x
    x = 17,653,026,306.59/147,557.82
  6. Step 6: Final answer
    x = 119,634.63

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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.