Home / 130,370.49-179,913.83-85,077.45

Finding the Fourth Proportional to 130,370.49, 179,913.83 and 85,077.45

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Solution

The fourth proportional to 130,370.49, 179,913.83 and 85,077.45 is: 117,408.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,370.49 : 179,913.83 = 85,077.45 : x
  2. Step 2: Convert to fraction form
    130,370.49/179,913.83 = 85,077.45/x
  3. Step 3: Cross multiply
    130,370.49x = 179,913.83 × 85,077.45
  4. Step 4: Simplify right side
    130,370.49x = 15,306,609,450.75
  5. Step 5: Solve for x
    x = 15,306,609,450.75/130,370.49
  6. Step 6: Final answer
    x = 117,408.54

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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.