Home / 112,968.84-155,896.74-65,220.96

Finding the Fourth Proportional to 112,968.84, 155,896.74 and 65,220.96

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Solution

The fourth proportional to 112,968.84, 155,896.74 and 65,220.96 is: 90,004.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,968.84 : 155,896.74 = 65,220.96 : x
  2. Step 2: Convert to fraction form
    112,968.84/155,896.74 = 65,220.96/x
  3. Step 3: Cross multiply
    112,968.84x = 155,896.74 × 65,220.96
  4. Step 4: Simplify right side
    112,968.84x = 10,167,735,043.67
  5. Step 5: Solve for x
    x = 10,167,735,043.67/112,968.84
  6. Step 6: Final answer
    x = 90,004.78

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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.