Home / 138,875,479.80-208,100,643.30-131,222,729.40

Finding the Fourth Proportional to 138,875,479.80, 208,100,643.30 and 131,222,729.40

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Solution

The fourth proportional to 138,875,479.80, 208,100,643.30 and 131,222,729.40 is: 196,633,231.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,875,479.80 : 208,100,643.30 = 131,222,729.40 : x
  2. Step 2: Convert to fraction form
    138,875,479.80/208,100,643.30 = 131,222,729.40/x
  3. Step 3: Cross multiply
    138,875,479.80x = 208,100,643.30 × 131,222,729.40
  4. Step 4: Simplify right side
    138,875,479.80x = 27,307,534,403,721,824
  5. Step 5: Solve for x
    x = 27,307,534,403,721,824/138,875,479.80
  6. Step 6: Final answer
    x = 196,633,231.75

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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.