Home / 135,587.02-187,114.94-81,861.60

Finding the Fourth Proportional to 135,587.02, 187,114.94 and 81,861.60

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Solution

The fourth proportional to 135,587.02, 187,114.94 and 81,861.60 is: 112,971.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,587.02 : 187,114.94 = 81,861.60 : x
  2. Step 2: Convert to fraction form
    135,587.02/187,114.94 = 81,861.60/x
  3. Step 3: Cross multiply
    135,587.02x = 187,114.94 × 81,861.60
  4. Step 4: Simplify right side
    135,587.02x = 15,317,528,372.30
  5. Step 5: Solve for x
    x = 15,317,528,372.30/135,587.02
  6. Step 6: Final answer
    x = 112,971.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.