Home / 172,402,580.47-238,051,120.38-138,805,336.69

Finding the Fourth Proportional to 172,402,580.47, 238,051,120.38 and 138,805,336.69

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Solution

The fourth proportional to 172,402,580.47, 238,051,120.38 and 138,805,336.69 is: 191,660,506.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,402,580.47 : 238,051,120.38 = 138,805,336.69 : x
  2. Step 2: Convert to fraction form
    172,402,580.47/238,051,120.38 = 138,805,336.69/x
  3. Step 3: Cross multiply
    172,402,580.47x = 238,051,120.38 × 138,805,336.69
  4. Step 4: Simplify right side
    172,402,580.47x = 33,042,765,913,777,620
  5. Step 5: Solve for x
    x = 33,042,765,913,777,620/172,402,580.47
  6. Step 6: Final answer
    x = 191,660,506.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.