Home / 79,778,858.20-119,668,287.30-66,173,968.60

Finding the Fourth Proportional to 79,778,858.20, 119,668,287.30 and 66,173,968.60

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Solution

The fourth proportional to 79,778,858.20, 119,668,287.30 and 66,173,968.60 is: 99,260,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,778,858.20 : 119,668,287.30 = 66,173,968.60 : x
  2. Step 2: Convert to fraction form
    79,778,858.20/119,668,287.30 = 66,173,968.60/x
  3. Step 3: Cross multiply
    79,778,858.20x = 119,668,287.30 × 66,173,968.60
  4. Step 4: Simplify right side
    79,778,858.20x = 7,918,925,486,205,979
  5. Step 5: Solve for x
    x = 7,918,925,486,205,979/79,778,858.20
  6. Step 6: Final answer
    x = 99,260,952.90

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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.