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Finding the Fourth Proportional to 108,908.40, 163,362.60 and 64,512.30

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Solution

The fourth proportional to 108,908.40, 163,362.60 and 64,512.30 is: 96,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,908.40 : 163,362.60 = 64,512.30 : x
  2. Step 2: Convert to fraction form
    108,908.40/163,362.60 = 64,512.30/x
  3. Step 3: Cross multiply
    108,908.40x = 163,362.60 × 64,512.30
  4. Step 4: Simplify right side
    108,908.40x = 10,538,897,059.98
  5. Step 5: Solve for x
    x = 10,538,897,059.98/108,908.40
  6. Step 6: Final answer
    x = 96,768.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.