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Finding the Fourth Proportional to 108,612.51, 149,879.05 and 63,297.87

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Solution

The fourth proportional to 108,612.51, 149,879.05 and 63,297.87 is: 87,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,612.51 : 149,879.05 = 63,297.87 : x
  2. Step 2: Convert to fraction form
    108,612.51/149,879.05 = 63,297.87/x
  3. Step 3: Cross multiply
    108,612.51x = 149,879.05 × 63,297.87
  4. Step 4: Simplify right side
    108,612.51x = 9,487,024,622.62
  5. Step 5: Solve for x
    x = 9,487,024,622.62/108,612.51
  6. Step 6: Final answer
    x = 87,347.44

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1.5x scale

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.