Home / 112,385.30-168,660.90-53,220.87

Finding the Fourth Proportional to 112,385.30, 168,660.90 and 53,220.87

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Solution

The fourth proportional to 112,385.30, 168,660.90 and 53,220.87 is: 79,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,385.30 : 168,660.90 = 53,220.87 : x
  2. Step 2: Convert to fraction form
    112,385.30/168,660.90 = 53,220.87/x
  3. Step 3: Cross multiply
    112,385.30x = 168,660.90 × 53,220.87
  4. Step 4: Simplify right side
    112,385.30x = 8,976,279,832.98
  5. Step 5: Solve for x
    x = 8,976,279,832.98/112,385.30
  6. Step 6: Final answer
    x = 79,870.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.