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Finding the Fourth Proportional to 138,841.53, 208,270.37 and 39,009.51

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Solution

The fourth proportional to 138,841.53, 208,270.37 and 39,009.51 is: 58,516.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,841.53 : 208,270.37 = 39,009.51 : x
  2. Step 2: Convert to fraction form
    138,841.53/208,270.37 = 39,009.51/x
  3. Step 3: Cross multiply
    138,841.53x = 208,270.37 × 39,009.51
  4. Step 4: Simplify right side
    138,841.53x = 8,124,525,081.22
  5. Step 5: Solve for x
    x = 8,124,525,081.22/138,841.53
  6. Step 6: Final answer
    x = 58,516.53

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1.5x scale

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.