Home / 116,619.96-160,985.19-78,401.67

Finding the Fourth Proportional to 116,619.96, 160,985.19 and 78,401.67

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Solution

The fourth proportional to 116,619.96, 160,985.19 and 78,401.67 is: 108,227.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,619.96 : 160,985.19 = 78,401.67 : x
  2. Step 2: Convert to fraction form
    116,619.96/160,985.19 = 78,401.67/x
  3. Step 3: Cross multiply
    116,619.96x = 160,985.19 × 78,401.67
  4. Step 4: Simplify right side
    116,619.96x = 12,621,507,884.35
  5. Step 5: Solve for x
    x = 12,621,507,884.35/116,619.96
  6. Step 6: Final answer
    x = 108,227.69

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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.