Home / 112,835.52-169,231.32-42,720.30

Finding the Fourth Proportional to 112,835.52, 169,231.32 and 42,720.30

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Solution

The fourth proportional to 112,835.52, 169,231.32 and 42,720.30 is: 64,072.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,835.52 : 169,231.32 = 42,720.30 : x
  2. Step 2: Convert to fraction form
    112,835.52/169,231.32 = 42,720.30/x
  3. Step 3: Cross multiply
    112,835.52x = 169,231.32 × 42,720.30
  4. Step 4: Simplify right side
    112,835.52x = 7,229,612,759.80
  5. Step 5: Solve for x
    x = 7,229,612,759.80/112,835.52
  6. Step 6: Final answer
    x = 64,072.14

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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.