Home / 123,506.64-170,439.12-66,918.02

Finding the Fourth Proportional to 123,506.64, 170,439.12 and 66,918.02

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Solution

The fourth proportional to 123,506.64, 170,439.12 and 66,918.02 is: 92,346.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,506.64 : 170,439.12 = 66,918.02 : x
  2. Step 2: Convert to fraction form
    123,506.64/170,439.12 = 66,918.02/x
  3. Step 3: Cross multiply
    123,506.64x = 170,439.12 × 66,918.02
  4. Step 4: Simplify right side
    123,506.64x = 11,405,447,588.75
  5. Step 5: Solve for x
    x = 11,405,447,588.75/123,506.64
  6. Step 6: Final answer
    x = 92,346.84

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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.