Home / 86,406.32-119,170.24-72,555.20

Finding the Fourth Proportional to 86,406.32, 119,170.24 and 72,555.20

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Solution

The fourth proportional to 86,406.32, 119,170.24 and 72,555.20 is: 100,066.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,406.32 : 119,170.24 = 72,555.20 : x
  2. Step 2: Convert to fraction form
    86,406.32/119,170.24 = 72,555.20/x
  3. Step 3: Cross multiply
    86,406.32x = 119,170.24 × 72,555.20
  4. Step 4: Simplify right side
    86,406.32x = 8,646,420,597.25
  5. Step 5: Solve for x
    x = 8,646,420,597.25/86,406.32
  6. Step 6: Final answer
    x = 100,066.99

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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.