Home / 138,694,521.61-191,397,962.05-79,956,906.67

Finding the Fourth Proportional to 138,694,521.61, 191,397,962.05 and 79,956,906.67

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Solution

The fourth proportional to 138,694,521.61, 191,397,962.05 and 79,956,906.67 is: 110,340,255.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694,521.61 : 191,397,962.05 = 79,956,906.67 : x
  2. Step 2: Convert to fraction form
    138,694,521.61/191,397,962.05 = 79,956,906.67/x
  3. Step 3: Cross multiply
    138,694,521.61x = 191,397,962.05 × 79,956,906.67
  4. Step 4: Simplify right side
    138,694,521.61x = 15,303,588,988,460,054
  5. Step 5: Solve for x
    x = 15,303,588,988,460,054/138,694,521.61
  6. Step 6: Final answer
    x = 110,340,255.77

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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.