Home / 130,874.54-196,311.80-42,128.06

Finding the Fourth Proportional to 130,874.54, 196,311.80 and 42,128.06

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Solution

The fourth proportional to 130,874.54, 196,311.80 and 42,128.06 is: 63,192.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,874.54 : 196,311.80 = 42,128.06 : x
  2. Step 2: Convert to fraction form
    130,874.54/196,311.80 = 42,128.06/x
  3. Step 3: Cross multiply
    130,874.54x = 196,311.80 × 42,128.06
  4. Step 4: Simplify right side
    130,874.54x = 8,270,235,289.11
  5. Step 5: Solve for x
    x = 8,270,235,289.11/130,874.54
  6. Step 6: Final answer
    x = 63,192.09

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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.