Home / 137,870.21-190,256.74-76,616.19

Finding the Fourth Proportional to 137,870.21, 190,256.74 and 76,616.19

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Solution

The fourth proportional to 137,870.21, 190,256.74 and 76,616.19 is: 105,728.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,870.21 : 190,256.74 = 76,616.19 : x
  2. Step 2: Convert to fraction form
    137,870.21/190,256.74 = 76,616.19/x
  3. Step 3: Cross multiply
    137,870.21x = 190,256.74 × 76,616.19
  4. Step 4: Simplify right side
    137,870.21x = 14,576,746,540.62
  5. Step 5: Solve for x
    x = 14,576,746,540.62/137,870.21
  6. Step 6: Final answer
    x = 105,728.04

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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.