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Finding the Fourth Proportional to 117,842.85, 162,624.65 and 64,129.32

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Solution

The fourth proportional to 117,842.85, 162,624.65 and 64,129.32 is: 88,499.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,842.85 : 162,624.65 = 64,129.32 : x
  2. Step 2: Convert to fraction form
    117,842.85/162,624.65 = 64,129.32/x
  3. Step 3: Cross multiply
    117,842.85x = 162,624.65 × 64,129.32
  4. Step 4: Simplify right side
    117,842.85x = 10,429,007,899.09
  5. Step 5: Solve for x
    x = 10,429,007,899.09/117,842.85
  6. Step 6: Final answer
    x = 88,499.28

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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.