Home / 77,609.30-116,932.55-70,121.56

Finding the Fourth Proportional to 77,609.30, 116,932.55 and 70,121.56

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Solution

The fourth proportional to 77,609.30, 116,932.55 and 70,121.56 is: 105,650.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,609.30 : 116,932.55 = 70,121.56 : x
  2. Step 2: Convert to fraction form
    77,609.30/116,932.55 = 70,121.56/x
  3. Step 3: Cross multiply
    77,609.30x = 116,932.55 × 70,121.56
  4. Step 4: Simplify right side
    77,609.30x = 8,199,492,177.84
  5. Step 5: Solve for x
    x = 8,199,492,177.84/77,609.30
  6. Step 6: Final answer
    x = 105,650.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.