Home / 120,432,821.76-166,160,678.40-68,213,560.32

Finding the Fourth Proportional to 120,432,821.76, 166,160,678.40 and 68,213,560.32

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Solution

The fourth proportional to 120,432,821.76, 166,160,678.40 and 68,213,560.32 is: 94,113,974.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,432,821.76 : 166,160,678.40 = 68,213,560.32 : x
  2. Step 2: Convert to fraction form
    120,432,821.76/166,160,678.40 = 68,213,560.32/x
  3. Step 3: Cross multiply
    120,432,821.76x = 166,160,678.40 × 68,213,560.32
  4. Step 4: Simplify right side
    120,432,821.76x = 11,334,411,458,850,520
  5. Step 5: Solve for x
    x = 11,334,411,458,850,520/120,432,821.76
  6. Step 6: Final answer
    x = 94,113,974.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.