Home / 78,228.04-117,341.82-67,666.66

Finding the Fourth Proportional to 78,228.04, 117,341.82 and 67,666.66

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Solution

The fourth proportional to 78,228.04, 117,341.82 and 67,666.66 is: 101,499.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,228.04 : 117,341.82 = 67,666.66 : x
  2. Step 2: Convert to fraction form
    78,228.04/117,341.82 = 67,666.66/x
  3. Step 3: Cross multiply
    78,228.04x = 117,341.82 × 67,666.66
  4. Step 4: Simplify right side
    78,228.04x = 7,940,129,037.72
  5. Step 5: Solve for x
    x = 7,940,129,037.72/78,228.04
  6. Step 6: Final answer
    x = 101,499.78

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1.5x scale

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.