Home / 122,905.84-169,622.76-75,190.90

Finding the Fourth Proportional to 122,905.84, 169,622.76 and 75,190.90

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Solution

The fourth proportional to 122,905.84, 169,622.76 and 75,190.90 is: 103,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,905.84 : 169,622.76 = 75,190.90 : x
  2. Step 2: Convert to fraction form
    122,905.84/169,622.76 = 75,190.90/x
  3. Step 3: Cross multiply
    122,905.84x = 169,622.76 × 75,190.90
  4. Step 4: Simplify right side
    122,905.84x = 12,754,087,984.88
  5. Step 5: Solve for x
    x = 12,754,087,984.88/122,905.84
  6. Step 6: Final answer
    x = 103,771.21

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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.