Home / 137,982.56-190,401.60-84,280.64

Finding the Fourth Proportional to 137,982.56, 190,401.60 and 84,280.64

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Solution

The fourth proportional to 137,982.56, 190,401.60 and 84,280.64 is: 116,298.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,982.56 : 190,401.60 = 84,280.64 : x
  2. Step 2: Convert to fraction form
    137,982.56/190,401.60 = 84,280.64/x
  3. Step 3: Cross multiply
    137,982.56x = 190,401.60 × 84,280.64
  4. Step 4: Simplify right side
    137,982.56x = 16,047,168,705.02
  5. Step 5: Solve for x
    x = 16,047,168,705.02/137,982.56
  6. Step 6: Final answer
    x = 116,298.53

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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.