Home / 138,671,659.76-191,366,717.72-76,791,923.60

Finding the Fourth Proportional to 138,671,659.76, 191,366,717.72 and 76,791,923.60

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Solution

The fourth proportional to 138,671,659.76, 191,366,717.72 and 76,791,923.60 is: 105,972,758.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,671,659.76 : 191,366,717.72 = 76,791,923.60 : x
  2. Step 2: Convert to fraction form
    138,671,659.76/191,366,717.72 = 76,791,923.60/x
  3. Step 3: Cross multiply
    138,671,659.76x = 191,366,717.72 × 76,791,923.60
  4. Step 4: Simplify right side
    138,671,659.76x = 14,695,418,366,737,004
  5. Step 5: Solve for x
    x = 14,695,418,366,737,004/138,671,659.76
  6. Step 6: Final answer
    x = 105,972,758.91

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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.