Home / 139,115,394.24-191,971,749.96-77,231,749.20

Finding the Fourth Proportional to 139,115,394.24, 191,971,749.96 and 77,231,749.20

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Solution

The fourth proportional to 139,115,394.24, 191,971,749.96 and 77,231,749.20 is: 106,575,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,115,394.24 : 191,971,749.96 = 77,231,749.20 : x
  2. Step 2: Convert to fraction form
    139,115,394.24/191,971,749.96 = 77,231,749.20/x
  3. Step 3: Cross multiply
    139,115,394.24x = 191,971,749.96 × 77,231,749.20
  4. Step 4: Simplify right side
    139,115,394.24x = 14,826,314,046,395,832
  5. Step 5: Solve for x
    x = 14,826,314,046,395,832/139,115,394.24
  6. Step 6: Final answer
    x = 106,575,653.45

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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.