Home / 86,380.32-119,134.36-72,529.19

Finding the Fourth Proportional to 86,380.32, 119,134.36 and 72,529.19

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Solution

The fourth proportional to 86,380.32, 119,134.36 and 72,529.19 is: 100,031.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,380.32 : 119,134.36 = 72,529.19 : x
  2. Step 2: Convert to fraction form
    86,380.32/119,134.36 = 72,529.19/x
  3. Step 3: Cross multiply
    86,380.32x = 119,134.36 × 72,529.19
  4. Step 4: Simplify right side
    86,380.32x = 8,640,718,573.71
  5. Step 5: Solve for x
    x = 8,640,718,573.71/86,380.32
  6. Step 6: Final answer
    x = 100,031.10

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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.