Home / 138,514,678.80-191,150,155.31-75,791,188.62

Finding the Fourth Proportional to 138,514,678.80, 191,150,155.31 and 75,791,188.62

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Solution

The fourth proportional to 138,514,678.80, 191,150,155.31 and 75,791,188.62 is: 104,591,784.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,514,678.80 : 191,150,155.31 = 75,791,188.62 : x
  2. Step 2: Convert to fraction form
    138,514,678.80/191,150,155.31 = 75,791,188.62/x
  3. Step 3: Cross multiply
    138,514,678.80x = 191,150,155.31 × 75,791,188.62
  4. Step 4: Simplify right side
    138,514,678.80x = 14,487,497,476,031,984
  5. Step 5: Solve for x
    x = 14,487,497,476,031,984/138,514,678.80
  6. Step 6: Final answer
    x = 104,591,784.80

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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.