Home / 79,390,828.80-119,086,243.20-78,718,982.40

Finding the Fourth Proportional to 79,390,828.80, 119,086,243.20 and 78,718,982.40

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Solution

The fourth proportional to 79,390,828.80, 119,086,243.20 and 78,718,982.40 is: 118,078,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,390,828.80 : 119,086,243.20 = 78,718,982.40 : x
  2. Step 2: Convert to fraction form
    79,390,828.80/119,086,243.20 = 78,718,982.40/x
  3. Step 3: Cross multiply
    79,390,828.80x = 119,086,243.20 × 78,718,982.40
  4. Step 4: Simplify right side
    79,390,828.80x = 9,374,347,882,542,920
  5. Step 5: Solve for x
    x = 9,374,347,882,542,920/79,390,828.80
  6. Step 6: Final answer
    x = 118,078,473.60

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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.