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Finding the Fourth Proportional to 108,003.45, 162,005.18 and 105,087.45

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Solution

The fourth proportional to 108,003.45, 162,005.18 and 105,087.45 is: 157,631.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,003.45 : 162,005.18 = 105,087.45 : x
  2. Step 2: Convert to fraction form
    108,003.45/162,005.18 = 105,087.45/x
  3. Step 3: Cross multiply
    108,003.45x = 162,005.18 × 105,087.45
  4. Step 4: Simplify right side
    108,003.45x = 17,024,710,727.55
  5. Step 5: Solve for x
    x = 17,024,710,727.55/108,003.45
  6. Step 6: Final answer
    x = 157,631.18

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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.