Home / 130,755.12-196,092.36-68,391.60

Finding the Fourth Proportional to 130,755.12, 196,092.36 and 68,391.60

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Solution

The fourth proportional to 130,755.12, 196,092.36 and 68,391.60 is: 102,566.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,755.12 : 196,092.36 = 68,391.60 : x
  2. Step 2: Convert to fraction form
    130,755.12/196,092.36 = 68,391.60/x
  3. Step 3: Cross multiply
    130,755.12x = 196,092.36 × 68,391.60
  4. Step 4: Simplify right side
    130,755.12x = 13,411,070,248.18
  5. Step 5: Solve for x
    x = 13,411,070,248.18/130,755.12
  6. Step 6: Final answer
    x = 102,566.31

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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.