Home / 102,076.90-140,873.97-56,758.66

Finding the Fourth Proportional to 102,076.90, 140,873.97 and 56,758.66

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Solution

The fourth proportional to 102,076.90, 140,873.97 and 56,758.66 is: 78,331.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,076.90 : 140,873.97 = 56,758.66 : x
  2. Step 2: Convert to fraction form
    102,076.90/140,873.97 = 56,758.66/x
  3. Step 3: Cross multiply
    102,076.90x = 140,873.97 × 56,758.66
  4. Step 4: Simplify right side
    102,076.90x = 7,995,817,766.08
  5. Step 5: Solve for x
    x = 7,995,817,766.08/102,076.90
  6. Step 6: Final answer
    x = 78,331.31

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1.5x scale

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.