Home / 137,947.02-206,512.29-85,186.86

Finding the Fourth Proportional to 137,947.02, 206,512.29 and 85,186.86

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Solution

The fourth proportional to 137,947.02, 206,512.29 and 85,186.86 is: 127,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,947.02 : 206,512.29 = 85,186.86 : x
  2. Step 2: Convert to fraction form
    137,947.02/206,512.29 = 85,186.86/x
  3. Step 3: Cross multiply
    137,947.02x = 206,512.29 × 85,186.86
  4. Step 4: Simplify right side
    137,947.02x = 17,592,133,536.51
  5. Step 5: Solve for x
    x = 17,592,133,536.51/137,947.02
  6. Step 6: Final answer
    x = 127,528.19

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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.