Home / 108,654.08-149,942.36-66,212.72

Finding the Fourth Proportional to 108,654.08, 149,942.36 and 66,212.72

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Solution

The fourth proportional to 108,654.08, 149,942.36 and 66,212.72 is: 91,373.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,654.08 : 149,942.36 = 66,212.72 : x
  2. Step 2: Convert to fraction form
    108,654.08/149,942.36 = 66,212.72/x
  3. Step 3: Cross multiply
    108,654.08x = 149,942.36 × 66,212.72
  4. Step 4: Simplify right side
    108,654.08x = 9,928,091,498.82
  5. Step 5: Solve for x
    x = 9,928,091,498.82/108,654.08
  6. Step 6: Final answer
    x = 91,373.39

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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.