Home / 137,912.96-190,328-103,861.40

Finding the Fourth Proportional to 137,912.96, 190,328 and 103,861.40

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Solution

The fourth proportional to 137,912.96, 190,328 and 103,861.40 is: 143,334.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,912.96 : 190,328 = 103,861.40 : x
  2. Step 2: Convert to fraction form
    137,912.96/190,328 = 103,861.40/x
  3. Step 3: Cross multiply
    137,912.96x = 190,328 × 103,861.40
  4. Step 4: Simplify right side
    137,912.96x = 19,767,732,539.20
  5. Step 5: Solve for x
    x = 19,767,732,539.20/137,912.96
  6. Step 6: Final answer
    x = 143,334.84

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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.