Home / 251,232,081.84-376,847,656.20-78,722,109.36

Finding the Fourth Proportional to 251,232,081.84, 376,847,656.20 and 78,722,109.36

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Solution

The fourth proportional to 251,232,081.84, 376,847,656.20 and 78,722,109.36 is: 118,083,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,232,081.84 : 376,847,656.20 = 78,722,109.36 : x
  2. Step 2: Convert to fraction form
    251,232,081.84/376,847,656.20 = 78,722,109.36/x
  3. Step 3: Cross multiply
    251,232,081.84x = 376,847,656.20 × 78,722,109.36
  4. Step 4: Simplify right side
    251,232,081.84x = 29,666,242,403,436,080
  5. Step 5: Solve for x
    x = 29,666,242,403,436,080/251,232,081.84
  6. Step 6: Final answer
    x = 118,083,017.85

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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.