Home / 137,990.41-190,432.16-77,560.87

Finding the Fourth Proportional to 137,990.41, 190,432.16 and 77,560.87

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Solution

The fourth proportional to 137,990.41, 190,432.16 and 77,560.87 is: 107,037.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,990.41 : 190,432.16 = 77,560.87 : x
  2. Step 2: Convert to fraction form
    137,990.41/190,432.16 = 77,560.87/x
  3. Step 3: Cross multiply
    137,990.41x = 190,432.16 × 77,560.87
  4. Step 4: Simplify right side
    137,990.41x = 14,770,083,690.30
  5. Step 5: Solve for x
    x = 14,770,083,690.30/137,990.41
  6. Step 6: Final answer
    x = 107,037.03

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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.