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Finding the Fourth Proportional to 159,520.86, 220,130.82 and 87,889.32

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Solution

The fourth proportional to 159,520.86, 220,130.82 and 87,889.32 is: 121,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,520.86 : 220,130.82 = 87,889.32 : x
  2. Step 2: Convert to fraction form
    159,520.86/220,130.82 = 87,889.32/x
  3. Step 3: Cross multiply
    159,520.86x = 220,130.82 × 87,889.32
  4. Step 4: Simplify right side
    159,520.86x = 19,347,148,080.84
  5. Step 5: Solve for x
    x = 19,347,148,080.84/159,520.86
  6. Step 6: Final answer
    x = 121,282.87

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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.