Home / 120,839,303.71-166,778,238.36-71,291,790.82

Finding the Fourth Proportional to 120,839,303.71, 166,778,238.36 and 71,291,790.82

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Solution

The fourth proportional to 120,839,303.71, 166,778,238.36 and 71,291,790.82 is: 98,394,470.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,839,303.71 : 166,778,238.36 = 71,291,790.82 : x
  2. Step 2: Convert to fraction form
    120,839,303.71/166,778,238.36 = 71,291,790.82/x
  3. Step 3: Cross multiply
    120,839,303.71x = 166,778,238.36 × 71,291,790.82
  4. Step 4: Simplify right side
    120,839,303.71x = 11,889,919,282,489,220
  5. Step 5: Solve for x
    x = 11,889,919,282,489,220/120,839,303.71
  6. Step 6: Final answer
    x = 98,394,470.32

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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.