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Finding the Fourth Proportional to 159,479.48, 220,083.35 and 87,862.07

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Solution

The fourth proportional to 159,479.48, 220,083.35 and 87,862.07 is: 121,250.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,479.48 : 220,083.35 = 87,862.07 : x
  2. Step 2: Convert to fraction form
    159,479.48/220,083.35 = 87,862.07/x
  3. Step 3: Cross multiply
    159,479.48x = 220,083.35 × 87,862.07
  4. Step 4: Simplify right side
    159,479.48x = 19,336,977,163.81
  5. Step 5: Solve for x
    x = 19,336,977,163.81/159,479.48
  6. Step 6: Final answer
    x = 121,250.57

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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.