Home / 123,118.24-169,903.10-66,529.60

Finding the Fourth Proportional to 123,118.24, 169,903.10 and 66,529.60

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Solution

The fourth proportional to 123,118.24, 169,903.10 and 66,529.60 is: 91,810.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,118.24 : 169,903.10 = 66,529.60 : x
  2. Step 2: Convert to fraction form
    123,118.24/169,903.10 = 66,529.60/x
  3. Step 3: Cross multiply
    123,118.24x = 169,903.10 × 66,529.60
  4. Step 4: Simplify right side
    123,118.24x = 11,303,585,281.76
  5. Step 5: Solve for x
    x = 11,303,585,281.76/123,118.24
  6. Step 6: Final answer
    x = 91,810.81

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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.