Home / 79,778,851.20-119,668,276.80-66,173,961.60

Finding the Fourth Proportional to 79,778,851.20, 119,668,276.80 and 66,173,961.60

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Solution

The fourth proportional to 79,778,851.20, 119,668,276.80 and 66,173,961.60 is: 99,260,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,778,851.20 : 119,668,276.80 = 66,173,961.60 : x
  2. Step 2: Convert to fraction form
    79,778,851.20/119,668,276.80 = 66,173,961.60/x
  3. Step 3: Cross multiply
    79,778,851.20x = 119,668,276.80 × 66,173,961.60
  4. Step 4: Simplify right side
    79,778,851.20x = 7,918,923,953,701,371
  5. Step 5: Solve for x
    x = 7,918,923,953,701,371/79,778,851.20
  6. Step 6: Final answer
    x = 99,260,942.40

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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.