Home / 138,923,196.74-208,403,957.76-80,658,314.40

Finding the Fourth Proportional to 138,923,196.74, 208,403,957.76 and 80,658,314.40

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Solution

The fourth proportional to 138,923,196.74, 208,403,957.76 and 80,658,314.40 is: 120,998,597.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,923,196.74 : 208,403,957.76 = 80,658,314.40 : x
  2. Step 2: Convert to fraction form
    138,923,196.74/208,403,957.76 = 80,658,314.40/x
  3. Step 3: Cross multiply
    138,923,196.74x = 208,403,957.76 × 80,658,314.40
  4. Step 4: Simplify right side
    138,923,196.74x = 16,809,511,947,210,400
  5. Step 5: Solve for x
    x = 16,809,511,947,210,400/138,923,196.74
  6. Step 6: Final answer
    x = 120,998,597.37

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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.