Home / 206,630,700.80-309,946,051.20-115,931,436.80

Finding the Fourth Proportional to 206,630,700.80, 309,946,051.20 and 115,931,436.80

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Solution

The fourth proportional to 206,630,700.80, 309,946,051.20 and 115,931,436.80 is: 173,897,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,630,700.80 : 309,946,051.20 = 115,931,436.80 : x
  2. Step 2: Convert to fraction form
    206,630,700.80/309,946,051.20 = 115,931,436.80/x
  3. Step 3: Cross multiply
    206,630,700.80x = 309,946,051.20 × 115,931,436.80
  4. Step 4: Simplify right side
    206,630,700.80x = 35,932,491,046,102,360
  5. Step 5: Solve for x
    x = 35,932,491,046,102,360/206,630,700.80
  6. Step 6: Final answer
    x = 173,897,155.20

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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.