Home / 163,516.10-245,310.60-128,086.70

Finding the Fourth Proportional to 163,516.10, 245,310.60 and 128,086.70

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Solution

The fourth proportional to 163,516.10, 245,310.60 and 128,086.70 is: 192,158.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,516.10 : 245,310.60 = 128,086.70 : x
  2. Step 2: Convert to fraction form
    163,516.10/245,310.60 = 128,086.70/x
  3. Step 3: Cross multiply
    163,516.10x = 245,310.60 × 128,086.70
  4. Step 4: Simplify right side
    163,516.10x = 31,421,025,229.02
  5. Step 5: Solve for x
    x = 31,421,025,229.02/163,516.10
  6. Step 6: Final answer
    x = 192,158.60

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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.