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Finding the Fourth Proportional to 159,398.94, 219,947.27 and 90,477.69

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Solution

The fourth proportional to 159,398.94, 219,947.27 and 90,477.69 is: 124,846.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,398.94 : 219,947.27 = 90,477.69 : x
  2. Step 2: Convert to fraction form
    159,398.94/219,947.27 = 90,477.69/x
  3. Step 3: Cross multiply
    159,398.94x = 219,947.27 × 90,477.69
  4. Step 4: Simplify right side
    159,398.94x = 19,900,321,137.60
  5. Step 5: Solve for x
    x = 19,900,321,137.60/159,398.94
  6. Step 6: Final answer
    x = 124,846.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.