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Finding the Fourth Proportional to 101,959.80, 140,707.06 and 56,635.60

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Solution

The fourth proportional to 101,959.80, 140,707.06 and 56,635.60 is: 78,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,959.80 : 140,707.06 = 56,635.60 : x
  2. Step 2: Convert to fraction form
    101,959.80/140,707.06 = 56,635.60/x
  3. Step 3: Cross multiply
    101,959.80x = 140,707.06 × 56,635.60
  4. Step 4: Simplify right side
    101,959.80x = 7,969,028,767.34
  5. Step 5: Solve for x
    x = 7,969,028,767.34/101,959.80
  6. Step 6: Final answer
    x = 78,158.54

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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.