Home / 100,832.96-139,112.16-100,677.44

Finding the Fourth Proportional to 100,832.96, 139,112.16 and 100,677.44

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Solution

The fourth proportional to 100,832.96, 139,112.16 and 100,677.44 is: 138,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,832.96 : 139,112.16 = 100,677.44 : x
  2. Step 2: Convert to fraction form
    100,832.96/139,112.16 = 100,677.44/x
  3. Step 3: Cross multiply
    100,832.96x = 139,112.16 × 100,677.44
  4. Step 4: Simplify right side
    100,832.96x = 14,005,456,141.67
  5. Step 5: Solve for x
    x = 14,005,456,141.67/100,832.96
  6. Step 6: Final answer
    x = 138,897.60

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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.