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Finding the Fourth Proportional to 108,387.72, 162,669.06 and 55,812.24

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Solution

The fourth proportional to 108,387.72, 162,669.06 and 55,812.24 is: 83,763.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,387.72 : 162,669.06 = 55,812.24 : x
  2. Step 2: Convert to fraction form
    108,387.72/162,669.06 = 55,812.24/x
  3. Step 3: Cross multiply
    108,387.72x = 162,669.06 × 55,812.24
  4. Step 4: Simplify right side
    108,387.72x = 9,078,924,617.29
  5. Step 5: Solve for x
    x = 9,078,924,617.29/108,387.72
  6. Step 6: Final answer
    x = 83,763.41

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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.