Home / 79,132,489.80-118,698,734.70-72,078,102.60

Finding the Fourth Proportional to 79,132,489.80, 118,698,734.70 and 72,078,102.60

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Solution

The fourth proportional to 79,132,489.80, 118,698,734.70 and 72,078,102.60 is: 108,117,153.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,132,489.80 : 118,698,734.70 = 72,078,102.60 : x
  2. Step 2: Convert to fraction form
    79,132,489.80/118,698,734.70 = 72,078,102.60/x
  3. Step 3: Cross multiply
    79,132,489.80x = 118,698,734.70 × 72,078,102.60
  4. Step 4: Simplify right side
    79,132,489.80x = 8,555,579,578,196,780
  5. Step 5: Solve for x
    x = 8,555,579,578,196,780/79,132,489.80
  6. Step 6: Final answer
    x = 108,117,153.90

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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.