Home / 137,619.75-189,915.60-80,298.48

Finding the Fourth Proportional to 137,619.75, 189,915.60 and 80,298.48

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Solution

The fourth proportional to 137,619.75, 189,915.60 and 80,298.48 is: 110,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,619.75 : 189,915.60 = 80,298.48 : x
  2. Step 2: Convert to fraction form
    137,619.75/189,915.60 = 80,298.48/x
  3. Step 3: Cross multiply
    137,619.75x = 189,915.60 × 80,298.48
  4. Step 4: Simplify right side
    137,619.75x = 15,249,934,008.29
  5. Step 5: Solve for x
    x = 15,249,934,008.29/137,619.75
  6. Step 6: Final answer
    x = 110,812.10

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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.