Home / 210,372.20-315,461.10-91,982.60

Finding the Fourth Proportional to 210,372.20, 315,461.10 and 91,982.60

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Solution

The fourth proportional to 210,372.20, 315,461.10 and 91,982.60 is: 137,931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,372.20 : 315,461.10 = 91,982.60 : x
  2. Step 2: Convert to fraction form
    210,372.20/315,461.10 = 91,982.60/x
  3. Step 3: Cross multiply
    210,372.20x = 315,461.10 × 91,982.60
  4. Step 4: Simplify right side
    210,372.20x = 29,016,932,176.86
  5. Step 5: Solve for x
    x = 29,016,932,176.86/210,372.20
  6. Step 6: Final answer
    x = 137,931.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.