Home / 129,090.24-193,220.96-68,968.47

Finding the Fourth Proportional to 129,090.24, 193,220.96 and 68,968.47

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Solution

The fourth proportional to 129,090.24, 193,220.96 and 68,968.47 is: 103,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,090.24 : 193,220.96 = 68,968.47 : x
  2. Step 2: Convert to fraction form
    129,090.24/193,220.96 = 68,968.47/x
  3. Step 3: Cross multiply
    129,090.24x = 193,220.96 × 68,968.47
  4. Step 4: Simplify right side
    129,090.24x = 13,326,153,638.29
  5. Step 5: Solve for x
    x = 13,326,153,638.29/129,090.24
  6. Step 6: Final answer
    x = 103,231.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.