Home / 138,240,288.83-190,777,394.27-79,502,999.82

Finding the Fourth Proportional to 138,240,288.83, 190,777,394.27 and 79,502,999.82

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Solution

The fourth proportional to 138,240,288.83, 190,777,394.27 and 79,502,999.82 is: 109,717,472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,240,288.83 : 190,777,394.27 = 79,502,999.82 : x
  2. Step 2: Convert to fraction form
    138,240,288.83/190,777,394.27 = 79,502,999.82/x
  3. Step 3: Cross multiply
    138,240,288.83x = 190,777,394.27 × 79,502,999.82
  4. Step 4: Simplify right side
    138,240,288.83x = 15,167,375,141,791,222
  5. Step 5: Solve for x
    x = 15,167,375,141,791,222/138,240,288.83
  6. Step 6: Final answer
    x = 109,717,472.89

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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.