Home / 100,861.83-139,158.05-57,247.25

Finding the Fourth Proportional to 100,861.83, 139,158.05 and 57,247.25

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Solution

The fourth proportional to 100,861.83, 139,158.05 and 57,247.25 is: 78,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,861.83 : 139,158.05 = 57,247.25 : x
  2. Step 2: Convert to fraction form
    100,861.83/139,158.05 = 57,247.25/x
  3. Step 3: Cross multiply
    100,861.83x = 139,158.05 × 57,247.25
  4. Step 4: Simplify right side
    100,861.83x = 7,966,414,695.84
  5. Step 5: Solve for x
    x = 7,966,414,695.84/100,861.83
  6. Step 6: Final answer
    x = 78,983.44

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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.