Home / 130,109.10-195,084.45-51,128.70

Finding the Fourth Proportional to 130,109.10, 195,084.45 and 51,128.70

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Solution

The fourth proportional to 130,109.10, 195,084.45 and 51,128.70 is: 76,661.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,109.10 : 195,084.45 = 51,128.70 : x
  2. Step 2: Convert to fraction form
    130,109.10/195,084.45 = 51,128.70/x
  3. Step 3: Cross multiply
    130,109.10x = 195,084.45 × 51,128.70
  4. Step 4: Simplify right side
    130,109.10x = 9,974,414,318.72
  5. Step 5: Solve for x
    x = 9,974,414,318.72/130,109.10
  6. Step 6: Final answer
    x = 76,661.93

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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.