Home / 116,619.72-160,984.87-78,401.43

Finding the Fourth Proportional to 116,619.72, 160,984.87 and 78,401.43

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Solution

The fourth proportional to 116,619.72, 160,984.87 and 78,401.43 is: 108,227.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,619.72 : 160,984.87 = 78,401.43 : x
  2. Step 2: Convert to fraction form
    116,619.72/160,984.87 = 78,401.43/x
  3. Step 3: Cross multiply
    116,619.72x = 160,984.87 × 78,401.43
  4. Step 4: Simplify right side
    116,619.72x = 12,621,444,804.18
  5. Step 5: Solve for x
    x = 12,621,444,804.18/116,619.72
  6. Step 6: Final answer
    x = 108,227.36

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1.5x scale

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.