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Finding the Fourth Proportional to 108,146.64, 149,220.72 and 60,392.64

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Solution

The fourth proportional to 108,146.64, 149,220.72 and 60,392.64 is: 83,329.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,146.64 : 149,220.72 = 60,392.64 : x
  2. Step 2: Convert to fraction form
    108,146.64/149,220.72 = 60,392.64/x
  3. Step 3: Cross multiply
    108,146.64x = 149,220.72 × 60,392.64
  4. Step 4: Simplify right side
    108,146.64x = 9,011,833,223.50
  5. Step 5: Solve for x
    x = 9,011,833,223.50/108,146.64
  6. Step 6: Final answer
    x = 83,329.76

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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.