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Finding the Fourth Proportional to 159,511.52, 220,124.72 and 87,889.84

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Solution

The fourth proportional to 159,511.52, 220,124.72 and 87,889.84 is: 121,287.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,511.52 : 220,124.72 = 87,889.84 : x
  2. Step 2: Convert to fraction form
    159,511.52/220,124.72 = 87,889.84/x
  3. Step 3: Cross multiply
    159,511.52x = 220,124.72 × 87,889.84
  4. Step 4: Simplify right side
    159,511.52x = 19,346,726,420.84
  5. Step 5: Solve for x
    x = 19,346,726,420.84/159,511.52
  6. Step 6: Final answer
    x = 121,287.33

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1.5x scale

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.