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Finding the Fourth Proportional to 108,411.87, 149,614.65 and 60,664.80

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Solution

The fourth proportional to 108,411.87, 149,614.65 and 60,664.80 is: 83,720.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,411.87 : 149,614.65 = 60,664.80 : x
  2. Step 2: Convert to fraction form
    108,411.87/149,614.65 = 60,664.80/x
  3. Step 3: Cross multiply
    108,411.87x = 149,614.65 × 60,664.80
  4. Step 4: Simplify right side
    108,411.87x = 9,076,342,819.32
  5. Step 5: Solve for x
    x = 9,076,342,819.32/108,411.87
  6. Step 6: Final answer
    x = 83,720.93

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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.