Home / 210,385,126.80-315,577,690.20-137,825,715.60

Finding the Fourth Proportional to 210,385,126.80, 315,577,690.20 and 137,825,715.60

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Solution

The fourth proportional to 210,385,126.80, 315,577,690.20 and 137,825,715.60 is: 206,738,573.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,385,126.80 : 315,577,690.20 = 137,825,715.60 : x
  2. Step 2: Convert to fraction form
    210,385,126.80/315,577,690.20 = 137,825,715.60/x
  3. Step 3: Cross multiply
    210,385,126.80x = 315,577,690.20 × 137,825,715.60
  4. Step 4: Simplify right side
    210,385,126.80x = 43,494,720,979,210,104
  5. Step 5: Solve for x
    x = 43,494,720,979,210,104/210,385,126.80
  6. Step 6: Final answer
    x = 206,738,573.40

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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.