Home / 132,389.10-198,255.60-84,931.20

Finding the Fourth Proportional to 132,389.10, 198,255.60 and 84,931.20

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Solution

The fourth proportional to 132,389.10, 198,255.60 and 84,931.20 is: 127,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,389.10 : 198,255.60 = 84,931.20 : x
  2. Step 2: Convert to fraction form
    132,389.10/198,255.60 = 84,931.20/x
  3. Step 3: Cross multiply
    132,389.10x = 198,255.60 × 84,931.20
  4. Step 4: Simplify right side
    132,389.10x = 16,838,086,014.72
  5. Step 5: Solve for x
    x = 16,838,086,014.72/132,389.10
  6. Step 6: Final answer
    x = 127,186.35

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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.