Home / 101,222.12-139,687.26-55,898.84

Finding the Fourth Proportional to 101,222.12, 139,687.26 and 55,898.84

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Solution

The fourth proportional to 101,222.12, 139,687.26 and 55,898.84 is: 77,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,222.12 : 139,687.26 = 55,898.84 : x
  2. Step 2: Convert to fraction form
    101,222.12/139,687.26 = 55,898.84/x
  3. Step 3: Cross multiply
    101,222.12x = 139,687.26 × 55,898.84
  4. Step 4: Simplify right side
    101,222.12x = 7,808,355,796.78
  5. Step 5: Solve for x
    x = 7,808,355,796.78/101,222.12
  6. Step 6: Final answer
    x = 77,140.80

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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.