Home / 79,185,920.20-118,778,880.30-66,431,336.20

Finding the Fourth Proportional to 79,185,920.20, 118,778,880.30 and 66,431,336.20

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Solution

The fourth proportional to 79,185,920.20, 118,778,880.30 and 66,431,336.20 is: 99,647,004.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,185,920.20 : 118,778,880.30 = 66,431,336.20 : x
  2. Step 2: Convert to fraction form
    79,185,920.20/118,778,880.30 = 66,431,336.20/x
  3. Step 3: Cross multiply
    79,185,920.20x = 118,778,880.30 × 66,431,336.20
  4. Step 4: Simplify right side
    79,185,920.20x = 7,890,639,730,668,857
  5. Step 5: Solve for x
    x = 7,890,639,730,668,857/79,185,920.20
  6. Step 6: Final answer
    x = 99,647,004.30

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1.5x scale

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.