Home / 138,742.89-191,465.69-75,080.67

Finding the Fourth Proportional to 138,742.89, 191,465.69 and 75,080.67

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Solution

The fourth proportional to 138,742.89, 191,465.69 and 75,080.67 is: 103,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,742.89 : 191,465.69 = 75,080.67 : x
  2. Step 2: Convert to fraction form
    138,742.89/191,465.69 = 75,080.67/x
  3. Step 3: Cross multiply
    138,742.89x = 191,465.69 × 75,080.67
  4. Step 4: Simplify right side
    138,742.89x = 14,375,372,287.21
  5. Step 5: Solve for x
    x = 14,375,372,287.21/138,742.89
  6. Step 6: Final answer
    x = 103,611.60

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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.