Home / 138,849.30-191,611.08-75,185.64

Finding the Fourth Proportional to 138,849.30, 191,611.08 and 75,185.64

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Solution

The fourth proportional to 138,849.30, 191,611.08 and 75,185.64 is: 103,755.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,849.30 : 191,611.08 = 75,185.64 : x
  2. Step 2: Convert to fraction form
    138,849.30/191,611.08 = 75,185.64/x
  3. Step 3: Cross multiply
    138,849.30x = 191,611.08 × 75,185.64
  4. Step 4: Simplify right side
    138,849.30x = 14,406,401,680.89
  5. Step 5: Solve for x
    x = 14,406,401,680.89/138,849.30
  6. Step 6: Final answer
    x = 103,755.67

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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.