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Finding the Fourth Proportional to 159,977.70, 220,767.90 and 88,362.66

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Solution

The fourth proportional to 159,977.70, 220,767.90 and 88,362.66 is: 121,939.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,977.70 : 220,767.90 = 88,362.66 : x
  2. Step 2: Convert to fraction form
    159,977.70/220,767.90 = 88,362.66/x
  3. Step 3: Cross multiply
    159,977.70x = 220,767.90 × 88,362.66
  4. Step 4: Simplify right side
    159,977.70x = 19,507,638,886.61
  5. Step 5: Solve for x
    x = 19,507,638,886.61/159,977.70
  6. Step 6: Final answer
    x = 121,939.74

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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.