Home / 138,514,678.61-191,150,155.06-75,791,188.43

Finding the Fourth Proportional to 138,514,678.61, 191,150,155.06 and 75,791,188.43

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Solution

The fourth proportional to 138,514,678.61, 191,150,155.06 and 75,791,188.43 is: 104,591,784.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,514,678.61 : 191,150,155.06 = 75,791,188.43 : x
  2. Step 2: Convert to fraction form
    138,514,678.61/191,150,155.06 = 75,791,188.43/x
  3. Step 3: Cross multiply
    138,514,678.61x = 191,150,155.06 × 75,791,188.43
  4. Step 4: Simplify right side
    138,514,678.61x = 14,487,497,421,222,982
  5. Step 5: Solve for x
    x = 14,487,497,421,222,982/138,514,678.61
  6. Step 6: Final answer
    x = 104,591,784.54

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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.