Home / 112,735.40-169,185.11-90,813.45

Finding the Fourth Proportional to 112,735.40, 169,185.11 and 90,813.45

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Solution

The fourth proportional to 112,735.40, 169,185.11 and 90,813.45 is: 136,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,735.40 : 169,185.11 = 90,813.45 : x
  2. Step 2: Convert to fraction form
    112,735.40/169,185.11 = 90,813.45/x
  3. Step 3: Cross multiply
    112,735.40x = 169,185.11 × 90,813.45
  4. Step 4: Simplify right side
    112,735.40x = 15,364,283,708.11
  5. Step 5: Solve for x
    x = 15,364,283,708.11/112,735.40
  6. Step 6: Final answer
    x = 136,286.25

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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.