Home / 137,905.02-206,449.29-85,144.86

Finding the Fourth Proportional to 137,905.02, 206,449.29 and 85,144.86

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Solution

The fourth proportional to 137,905.02, 206,449.29 and 85,144.86 is: 127,465.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,905.02 : 206,449.29 = 85,144.86 : x
  2. Step 2: Convert to fraction form
    137,905.02/206,449.29 = 85,144.86/x
  3. Step 3: Cross multiply
    137,905.02x = 206,449.29 × 85,144.86
  4. Step 4: Simplify right side
    137,905.02x = 17,578,095,894.15
  5. Step 5: Solve for x
    x = 17,578,095,894.15/137,905.02
  6. Step 6: Final answer
    x = 127,465.24

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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.