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Finding the Fourth Proportional to 108,874.19, 150,242.50 and 61,129.55

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Solution

The fourth proportional to 108,874.19, 150,242.50 and 61,129.55 is: 84,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,874.19 : 150,242.50 = 61,129.55 : x
  2. Step 2: Convert to fraction form
    108,874.19/150,242.50 = 61,129.55/x
  3. Step 3: Cross multiply
    108,874.19x = 150,242.50 × 61,129.55
  4. Step 4: Simplify right side
    108,874.19x = 9,184,255,664.66
  5. Step 5: Solve for x
    x = 9,184,255,664.66/108,874.19
  6. Step 6: Final answer
    x = 84,356.60

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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.