Home / 131,868,001.20-197,802,001.80-91,053,332.40

Finding the Fourth Proportional to 131,868,001.20, 197,802,001.80 and 91,053,332.40

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Solution

The fourth proportional to 131,868,001.20, 197,802,001.80 and 91,053,332.40 is: 136,579,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,868,001.20 : 197,802,001.80 = 91,053,332.40 : x
  2. Step 2: Convert to fraction form
    131,868,001.20/197,802,001.80 = 91,053,332.40/x
  3. Step 3: Cross multiply
    131,868,001.20x = 197,802,001.80 × 91,053,332.40
  4. Step 4: Simplify right side
    131,868,001.20x = 18,010,531,419,280,800
  5. Step 5: Solve for x
    x = 18,010,531,419,280,800/131,868,001.20
  6. Step 6: Final answer
    x = 136,579,998.60

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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.