Home / 100,732.06-139,005.96-55,407.17

Finding the Fourth Proportional to 100,732.06, 139,005.96 and 55,407.17

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Solution

The fourth proportional to 100,732.06, 139,005.96 and 55,407.17 is: 76,459.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,732.06 : 139,005.96 = 55,407.17 : x
  2. Step 2: Convert to fraction form
    100,732.06/139,005.96 = 55,407.17/x
  3. Step 3: Cross multiply
    100,732.06x = 139,005.96 × 55,407.17
  4. Step 4: Simplify right side
    100,732.06x = 7,701,926,856.73
  5. Step 5: Solve for x
    x = 7,701,926,856.73/100,732.06
  6. Step 6: Final answer
    x = 76,459.54

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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.