Home / 108,136.89-161,987.85-53,938.17

Finding the Fourth Proportional to 108,136.89, 161,987.85 and 53,938.17

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Solution

The fourth proportional to 108,136.89, 161,987.85 and 53,938.17 is: 80,798.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,136.89 : 161,987.85 = 53,938.17 : x
  2. Step 2: Convert to fraction form
    108,136.89/161,987.85 = 53,938.17/x
  3. Step 3: Cross multiply
    108,136.89x = 161,987.85 × 53,938.17
  4. Step 4: Simplify right side
    108,136.89x = 8,737,328,191.23
  5. Step 5: Solve for x
    x = 8,737,328,191.23/108,136.89
  6. Step 6: Final answer
    x = 80,798.77

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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.