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Finding the Fourth Proportional to 108,156.16, 162,292.48 and 45,019.90

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Solution

The fourth proportional to 108,156.16, 162,292.48 and 45,019.90 is: 67,554.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,156.16 : 162,292.48 = 45,019.90 : x
  2. Step 2: Convert to fraction form
    108,156.16/162,292.48 = 45,019.90/x
  3. Step 3: Cross multiply
    108,156.16x = 162,292.48 × 45,019.90
  4. Step 4: Simplify right side
    108,156.16x = 7,306,391,220.35
  5. Step 5: Solve for x
    x = 7,306,391,220.35/108,156.16
  6. Step 6: Final answer
    x = 67,554.09

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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.