Home / 137,239.04-205,829.70-38,720

Finding the Fourth Proportional to 137,239.04, 205,829.70 and 38,720

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Solution

The fourth proportional to 137,239.04, 205,829.70 and 38,720 is: 58,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,239.04 : 205,829.70 = 38,720 : x
  2. Step 2: Convert to fraction form
    137,239.04/205,829.70 = 38,720/x
  3. Step 3: Cross multiply
    137,239.04x = 205,829.70 × 38,720
  4. Step 4: Simplify right side
    137,239.04x = 7,969,725,984
  5. Step 5: Solve for x
    x = 7,969,725,984/137,239.04
  6. Step 6: Final answer
    x = 58,071.86

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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.