Home / 111,905.52-154,450.32-64,159.20

Finding the Fourth Proportional to 111,905.52, 154,450.32 and 64,159.20

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Solution

The fourth proportional to 111,905.52, 154,450.32 and 64,159.20 is: 88,551.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,905.52 : 154,450.32 = 64,159.20 : x
  2. Step 2: Convert to fraction form
    111,905.52/154,450.32 = 64,159.20/x
  3. Step 3: Cross multiply
    111,905.52x = 154,450.32 × 64,159.20
  4. Step 4: Simplify right side
    111,905.52x = 9,909,408,970.94
  5. Step 5: Solve for x
    x = 9,909,408,970.94/111,905.52
  6. Step 6: Final answer
    x = 88,551.57

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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.