Home / 130,708.72-195,747.28-74,378.16

Finding the Fourth Proportional to 130,708.72, 195,747.28 and 74,378.16

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Solution

The fourth proportional to 130,708.72, 195,747.28 and 74,378.16 is: 111,387.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,708.72 : 195,747.28 = 74,378.16 : x
  2. Step 2: Convert to fraction form
    130,708.72/195,747.28 = 74,378.16/x
  3. Step 3: Cross multiply
    130,708.72x = 195,747.28 × 74,378.16
  4. Step 4: Simplify right side
    130,708.72x = 14,559,322,511.40
  5. Step 5: Solve for x
    x = 14,559,322,511.40/130,708.72
  6. Step 6: Final answer
    x = 111,387.54

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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.