Home / 112,896.14-155,680.36-78,892.16

Finding the Fourth Proportional to 112,896.14, 155,680.36 and 78,892.16

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Solution

The fourth proportional to 112,896.14, 155,680.36 and 78,892.16 is: 108,789.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,896.14 : 155,680.36 = 78,892.16 : x
  2. Step 2: Convert to fraction form
    112,896.14/155,680.36 = 78,892.16/x
  3. Step 3: Cross multiply
    112,896.14x = 155,680.36 × 78,892.16
  4. Step 4: Simplify right side
    112,896.14x = 12,281,960,213.82
  5. Step 5: Solve for x
    x = 12,281,960,213.82/112,896.14
  6. Step 6: Final answer
    x = 108,789.91

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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.