Home / 112,912.20-169,368.30-70,921.80

Finding the Fourth Proportional to 112,912.20, 169,368.30 and 70,921.80

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Solution

The fourth proportional to 112,912.20, 169,368.30 and 70,921.80 is: 106,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,912.20 : 169,368.30 = 70,921.80 : x
  2. Step 2: Convert to fraction form
    112,912.20/169,368.30 = 70,921.80/x
  3. Step 3: Cross multiply
    112,912.20x = 169,368.30 × 70,921.80
  4. Step 4: Simplify right side
    112,912.20x = 12,011,904,698.94
  5. Step 5: Solve for x
    x = 12,011,904,698.94/112,912.20
  6. Step 6: Final answer
    x = 106,382.70

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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.