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Finding the Fourth Proportional to 108,238.32, 149,368.32 and 60,491.64

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Solution

The fourth proportional to 108,238.32, 149,368.32 and 60,491.64 is: 83,478.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,238.32 : 149,368.32 = 60,491.64 : x
  2. Step 2: Convert to fraction form
    108,238.32/149,368.32 = 60,491.64/x
  3. Step 3: Cross multiply
    108,238.32x = 149,368.32 × 60,491.64
  4. Step 4: Simplify right side
    108,238.32x = 9,035,534,640.84
  5. Step 5: Solve for x
    x = 9,035,534,640.84/108,238.32
  6. Step 6: Final answer
    x = 83,478.15

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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.