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Finding the Fourth Proportional to 108,058.78, 149,200.14 and 69,840.96

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Solution

The fourth proportional to 108,058.78, 149,200.14 and 69,840.96 is: 96,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,058.78 : 149,200.14 = 69,840.96 : x
  2. Step 2: Convert to fraction form
    108,058.78/149,200.14 = 69,840.96/x
  3. Step 3: Cross multiply
    108,058.78x = 149,200.14 × 69,840.96
  4. Step 4: Simplify right side
    108,058.78x = 10,420,281,009.73
  5. Step 5: Solve for x
    x = 10,420,281,009.73/108,058.78
  6. Step 6: Final answer
    x = 96,431.60

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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.