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Finding the Fourth Proportional to 108,765.90, 150,098.40 and 61,016.40

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Solution

The fourth proportional to 108,765.90, 150,098.40 and 61,016.40 is: 84,203.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,765.90 : 150,098.40 = 61,016.40 : x
  2. Step 2: Convert to fraction form
    108,765.90/150,098.40 = 61,016.40/x
  3. Step 3: Cross multiply
    108,765.90x = 150,098.40 × 61,016.40
  4. Step 4: Simplify right side
    108,765.90x = 9,158,464,013.76
  5. Step 5: Solve for x
    x = 9,158,464,013.76/108,765.90
  6. Step 6: Final answer
    x = 84,203.45

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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.