Home / 208,548.02-312,865.77-90,236.18

Finding the Fourth Proportional to 208,548.02, 312,865.77 and 90,236.18

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Solution

The fourth proportional to 208,548.02, 312,865.77 and 90,236.18 is: 135,373.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,548.02 : 312,865.77 = 90,236.18 : x
  2. Step 2: Convert to fraction form
    208,548.02/312,865.77 = 90,236.18/x
  3. Step 3: Cross multiply
    208,548.02x = 312,865.77 × 90,236.18
  4. Step 4: Simplify right side
    208,548.02x = 28,231,811,937.56
  5. Step 5: Solve for x
    x = 28,231,811,937.56/208,548.02
  6. Step 6: Final answer
    x = 135,373.20

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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.