Home / 108,421.53-162,631.34-84,748.98

Finding the Fourth Proportional to 108,421.53, 162,631.34 and 84,748.98

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Solution

The fourth proportional to 108,421.53, 162,631.34 and 84,748.98 is: 127,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,421.53 : 162,631.34 = 84,748.98 : x
  2. Step 2: Convert to fraction form
    108,421.53/162,631.34 = 84,748.98/x
  3. Step 3: Cross multiply
    108,421.53x = 162,631.34 × 84,748.98
  4. Step 4: Simplify right side
    108,421.53x = 13,782,839,757.29
  5. Step 5: Solve for x
    x = 13,782,839,757.29/108,421.53
  6. Step 6: Final answer
    x = 127,122.72

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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.