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Finding the Fourth Proportional to 108,537.80, 162,806.70 and 98,688.20

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Solution

The fourth proportional to 108,537.80, 162,806.70 and 98,688.20 is: 148,032.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,537.80 : 162,806.70 = 98,688.20 : x
  2. Step 2: Convert to fraction form
    108,537.80/162,806.70 = 98,688.20/x
  3. Step 3: Cross multiply
    108,537.80x = 162,806.70 × 98,688.20
  4. Step 4: Simplify right side
    108,537.80x = 16,067,100,170.94
  5. Step 5: Solve for x
    x = 16,067,100,170.94/108,537.80
  6. Step 6: Final answer
    x = 148,032.30

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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.