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Finding the Fourth Proportional to 137,987.76, 207,903.72 and 124,676.22

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Solution

The fourth proportional to 137,987.76, 207,903.72 and 124,676.22 is: 187,847.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,987.76 : 207,903.72 = 124,676.22 : x
  2. Step 2: Convert to fraction form
    137,987.76/207,903.72 = 124,676.22/x
  3. Step 3: Cross multiply
    137,987.76x = 207,903.72 × 124,676.22
  4. Step 4: Simplify right side
    137,987.76x = 25,920,649,933.54
  5. Step 5: Solve for x
    x = 25,920,649,933.54/137,987.76
  6. Step 6: Final answer
    x = 187,847.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.