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Finding the Fourth Proportional to 159,513.30, 220,125.33 and 87,899.94

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Solution

The fourth proportional to 159,513.30, 220,125.33 and 87,899.94 is: 121,300.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,513.30 : 220,125.33 = 87,899.94 : x
  2. Step 2: Convert to fraction form
    159,513.30/220,125.33 = 87,899.94/x
  3. Step 3: Cross multiply
    159,513.30x = 220,125.33 × 87,899.94
  4. Step 4: Simplify right side
    159,513.30x = 19,349,003,299.48
  5. Step 5: Solve for x
    x = 19,349,003,299.48/159,513.30
  6. Step 6: Final answer
    x = 121,300.25

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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.