Home / 101,986.64-140,732.77-56,663.80

Finding the Fourth Proportional to 101,986.64, 140,732.77 and 56,663.80

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Solution

The fourth proportional to 101,986.64, 140,732.77 and 56,663.80 is: 78,191.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,986.64 : 140,732.77 = 56,663.80 : x
  2. Step 2: Convert to fraction form
    101,986.64/140,732.77 = 56,663.80/x
  3. Step 3: Cross multiply
    101,986.64x = 140,732.77 × 56,663.80
  4. Step 4: Simplify right side
    101,986.64x = 7,974,453,777.73
  5. Step 5: Solve for x
    x = 7,974,453,777.73/101,986.64
  6. Step 6: Final answer
    x = 78,191.16

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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.