Home / 100,888.05-139,215.21-62,119.73

Finding the Fourth Proportional to 100,888.05, 139,215.21 and 62,119.73

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Solution

The fourth proportional to 100,888.05, 139,215.21 and 62,119.73 is: 85,718.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,888.05 : 139,215.21 = 62,119.73 : x
  2. Step 2: Convert to fraction form
    100,888.05/139,215.21 = 62,119.73/x
  3. Step 3: Cross multiply
    100,888.05x = 139,215.21 × 62,119.73
  4. Step 4: Simplify right side
    100,888.05x = 8,648,010,561.02
  5. Step 5: Solve for x
    x = 8,648,010,561.02/100,888.05
  6. Step 6: Final answer
    x = 85,718.88

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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.