Home / 208,135,870.38-312,082,792.02-78,753,458.88

Finding the Fourth Proportional to 208,135,870.38, 312,082,792.02 and 78,753,458.88

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Solution

The fourth proportional to 208,135,870.38, 312,082,792.02 and 78,753,458.88 is: 118,084,399.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,135,870.38 : 312,082,792.02 = 78,753,458.88 : x
  2. Step 2: Convert to fraction form
    208,135,870.38/312,082,792.02 = 78,753,458.88/x
  3. Step 3: Cross multiply
    208,135,870.38x = 312,082,792.02 × 78,753,458.88
  4. Step 4: Simplify right side
    208,135,870.38x = 24,577,599,328,502,660
  5. Step 5: Solve for x
    x = 24,577,599,328,502,660/208,135,870.38
  6. Step 6: Final answer
    x = 118,084,399.79

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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.