Home / 128,072,778.24-191,799,455.34-73,319,297.75

Finding the Fourth Proportional to 128,072,778.24, 191,799,455.34 and 73,319,297.75

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Solution

The fourth proportional to 128,072,778.24, 191,799,455.34 and 73,319,297.75 is: 109,801,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,072,778.24 : 191,799,455.34 = 73,319,297.75 : x
  2. Step 2: Convert to fraction form
    128,072,778.24/191,799,455.34 = 73,319,297.75/x
  3. Step 3: Cross multiply
    128,072,778.24x = 191,799,455.34 × 73,319,297.75
  4. Step 4: Simplify right side
    128,072,778.24x = 14,062,601,374,396,486
  5. Step 5: Solve for x
    x = 14,062,601,374,396,486/128,072,778.24
  6. Step 6: Final answer
    x = 109,801,642.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.