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Finding the Fourth Proportional to 108,376.40, 162,953.40 and 91,269.20

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Solution

The fourth proportional to 108,376.40, 162,953.40 and 91,269.20 is: 137,231.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,376.40 : 162,953.40 = 91,269.20 : x
  2. Step 2: Convert to fraction form
    108,376.40/162,953.40 = 91,269.20/x
  3. Step 3: Cross multiply
    108,376.40x = 162,953.40 × 91,269.20
  4. Step 4: Simplify right side
    108,376.40x = 14,872,626,455.28
  5. Step 5: Solve for x
    x = 14,872,626,455.28/108,376.40
  6. Step 6: Final answer
    x = 137,231.23

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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.