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Finding the Fourth Proportional to 108,873.81, 150,245.85 and 61,128.18

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Solution

The fourth proportional to 108,873.81, 150,245.85 and 61,128.18 is: 84,356.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,873.81 : 150,245.85 = 61,128.18 : x
  2. Step 2: Convert to fraction form
    108,873.81/150,245.85 = 61,128.18/x
  3. Step 3: Cross multiply
    108,873.81x = 150,245.85 × 61,128.18
  4. Step 4: Simplify right side
    108,873.81x = 9,184,255,780.09
  5. Step 5: Solve for x
    x = 9,184,255,780.09/108,873.81
  6. Step 6: Final answer
    x = 84,356.89

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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.