Home / 206,927,999.70-310,280,025.15-85,771,698.90

Finding the Fourth Proportional to 206,927,999.70, 310,280,025.15 and 85,771,698.90

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Solution

The fourth proportional to 206,927,999.70, 310,280,025.15 and 85,771,698.90 is: 128,611,134.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,927,999.70 : 310,280,025.15 = 85,771,698.90 : x
  2. Step 2: Convert to fraction form
    206,927,999.70/310,280,025.15 = 85,771,698.90/x
  3. Step 3: Cross multiply
    206,927,999.70x = 310,280,025.15 × 85,771,698.90
  4. Step 4: Simplify right side
    206,927,999.70x = 26,613,244,891,850,228
  5. Step 5: Solve for x
    x = 26,613,244,891,850,228/206,927,999.70
  6. Step 6: Final answer
    x = 128,611,134.94

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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.