Home / 112,775.25-169,109.89-65,403.80

Finding the Fourth Proportional to 112,775.25, 169,109.89 and 65,403.80

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Solution

The fourth proportional to 112,775.25, 169,109.89 and 65,403.80 is: 98,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,775.25 : 169,109.89 = 65,403.80 : x
  2. Step 2: Convert to fraction form
    112,775.25/169,109.89 = 65,403.80/x
  3. Step 3: Cross multiply
    112,775.25x = 169,109.89 × 65,403.80
  4. Step 4: Simplify right side
    112,775.25x = 11,060,429,423.58
  5. Step 5: Solve for x
    x = 11,060,429,423.58/112,775.25
  6. Step 6: Final answer
    x = 98,074.97

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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.