Home / 100,835.96-139,116.30-100,680.44

Finding the Fourth Proportional to 100,835.96, 139,116.30 and 100,680.44

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Solution

The fourth proportional to 100,835.96, 139,116.30 and 100,680.44 is: 138,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,835.96 : 139,116.30 = 100,680.44 : x
  2. Step 2: Convert to fraction form
    100,835.96/139,116.30 = 100,680.44/x
  3. Step 3: Cross multiply
    100,835.96x = 139,116.30 × 100,680.44
  4. Step 4: Simplify right side
    100,835.96x = 14,006,290,295.17
  5. Step 5: Solve for x
    x = 14,006,290,295.17/100,835.96
  6. Step 6: Final answer
    x = 138,901.74

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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.