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Finding the Fourth Proportional to 108,908.20, 163,362.30 and 105,992.20

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Solution

The fourth proportional to 108,908.20, 163,362.30 and 105,992.20 is: 158,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,908.20 : 163,362.30 = 105,992.20 : x
  2. Step 2: Convert to fraction form
    108,908.20/163,362.30 = 105,992.20/x
  3. Step 3: Cross multiply
    108,908.20x = 163,362.30 × 105,992.20
  4. Step 4: Simplify right side
    108,908.20x = 17,315,129,574.06
  5. Step 5: Solve for x
    x = 17,315,129,574.06/108,908.20
  6. Step 6: Final answer
    x = 158,988.30

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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.