Home / 119,700.25-165,063.63-78,875.04

Finding the Fourth Proportional to 119,700.25, 165,063.63 and 78,875.04

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Solution

The fourth proportional to 119,700.25, 165,063.63 and 78,875.04 is: 108,766.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,700.25 : 165,063.63 = 78,875.04 : x
  2. Step 2: Convert to fraction form
    119,700.25/165,063.63 = 78,875.04/x
  3. Step 3: Cross multiply
    119,700.25x = 165,063.63 × 78,875.04
  4. Step 4: Simplify right side
    119,700.25x = 13,019,400,418.80
  5. Step 5: Solve for x
    x = 13,019,400,418.80/119,700.25
  6. Step 6: Final answer
    x = 108,766.69

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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.