Home / 112,628.43-169,025.88-90,706.40

Finding the Fourth Proportional to 112,628.43, 169,025.88 and 90,706.40

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Solution

The fourth proportional to 112,628.43, 169,025.88 and 90,706.40 is: 136,126.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,628.43 : 169,025.88 = 90,706.40 : x
  2. Step 2: Convert to fraction form
    112,628.43/169,025.88 = 90,706.40/x
  3. Step 3: Cross multiply
    112,628.43x = 169,025.88 × 90,706.40
  4. Step 4: Simplify right side
    112,628.43x = 15,331,728,236.50
  5. Step 5: Solve for x
    x = 15,331,728,236.50/112,628.43
  6. Step 6: Final answer
    x = 136,126.63

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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.