Home / 172,402,579.47-238,051,119-138,805,335.69

Finding the Fourth Proportional to 172,402,579.47, 238,051,119 and 138,805,335.69

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Solution

The fourth proportional to 172,402,579.47, 238,051,119 and 138,805,335.69 is: 191,660,505.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,402,579.47 : 238,051,119 = 138,805,335.69 : x
  2. Step 2: Convert to fraction form
    172,402,579.47/238,051,119 = 138,805,335.69/x
  3. Step 3: Cross multiply
    172,402,579.47x = 238,051,119 × 138,805,335.69
  4. Step 4: Simplify right side
    172,402,579.47x = 33,042,765,484,175,136
  5. Step 5: Solve for x
    x = 33,042,765,484,175,136/172,402,579.47
  6. Step 6: Final answer
    x = 191,660,505.23

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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.