Home / 112,102.86-154,765.31-74,428.62

Finding the Fourth Proportional to 112,102.86, 154,765.31 and 74,428.62

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Solution

The fourth proportional to 112,102.86, 154,765.31 and 74,428.62 is: 102,753.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,102.86 : 154,765.31 = 74,428.62 : x
  2. Step 2: Convert to fraction form
    112,102.86/154,765.31 = 74,428.62/x
  3. Step 3: Cross multiply
    112,102.86x = 154,765.31 × 74,428.62
  4. Step 4: Simplify right side
    112,102.86x = 11,518,968,447.17
  5. Step 5: Solve for x
    x = 11,518,968,447.17/112,102.86
  6. Step 6: Final answer
    x = 102,753.56

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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.