Home / 138,895,208.80-208,342,813.20-131,817,320.80

Finding the Fourth Proportional to 138,895,208.80, 208,342,813.20 and 131,817,320.80

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Solution

The fourth proportional to 138,895,208.80, 208,342,813.20 and 131,817,320.80 is: 197,725,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,895,208.80 : 208,342,813.20 = 131,817,320.80 : x
  2. Step 2: Convert to fraction form
    138,895,208.80/208,342,813.20 = 131,817,320.80/x
  3. Step 3: Cross multiply
    138,895,208.80x = 208,342,813.20 × 131,817,320.80
  4. Step 4: Simplify right side
    138,895,208.80x = 27,463,191,443,958,872
  5. Step 5: Solve for x
    x = 27,463,191,443,958,872/138,895,208.80
  6. Step 6: Final answer
    x = 197,725,981.20

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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.