Home / 75,440.32-113,145.90-71,693.80

Finding the Fourth Proportional to 75,440.32, 113,145.90 and 71,693.80

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Solution

The fourth proportional to 75,440.32, 113,145.90 and 71,693.80 is: 107,526.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,440.32 : 113,145.90 = 71,693.80 : x
  2. Step 2: Convert to fraction form
    75,440.32/113,145.90 = 71,693.80/x
  3. Step 3: Cross multiply
    75,440.32x = 113,145.90 × 71,693.80
  4. Step 4: Simplify right side
    75,440.32x = 8,111,859,525.42
  5. Step 5: Solve for x
    x = 8,111,859,525.42/75,440.32
  6. Step 6: Final answer
    x = 107,526.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.