Home / 261,663.40-392,495.10-137,042.60

Finding the Fourth Proportional to 261,663.40, 392,495.10 and 137,042.60

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Solution

The fourth proportional to 261,663.40, 392,495.10 and 137,042.60 is: 205,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,663.40 : 392,495.10 = 137,042.60 : x
  2. Step 2: Convert to fraction form
    261,663.40/392,495.10 = 137,042.60/x
  3. Step 3: Cross multiply
    261,663.40x = 392,495.10 × 137,042.60
  4. Step 4: Simplify right side
    261,663.40x = 53,788,548,991.26
  5. Step 5: Solve for x
    x = 53,788,548,991.26/261,663.40
  6. Step 6: Final answer
    x = 205,563.90

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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.