Home / 130,496.85-180,077.12-76,771.48

Finding the Fourth Proportional to 130,496.85, 180,077.12 and 76,771.48

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Solution

The fourth proportional to 130,496.85, 180,077.12 and 76,771.48 is: 105,939.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,496.85 : 180,077.12 = 76,771.48 : x
  2. Step 2: Convert to fraction form
    130,496.85/180,077.12 = 76,771.48/x
  3. Step 3: Cross multiply
    130,496.85x = 180,077.12 × 76,771.48
  4. Step 4: Simplify right side
    130,496.85x = 13,824,787,999.57
  5. Step 5: Solve for x
    x = 13,824,787,999.57/130,496.85
  6. Step 6: Final answer
    x = 105,939.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.