Home / 103,735.50-143,004.21-89,333.07

Finding the Fourth Proportional to 103,735.50, 143,004.21 and 89,333.07

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Solution

The fourth proportional to 103,735.50, 143,004.21 and 89,333.07 is: 123,149.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,735.50 : 143,004.21 = 89,333.07 : x
  2. Step 2: Convert to fraction form
    103,735.50/143,004.21 = 89,333.07/x
  3. Step 3: Cross multiply
    103,735.50x = 143,004.21 × 89,333.07
  4. Step 4: Simplify right side
    103,735.50x = 12,775,005,102.22
  5. Step 5: Solve for x
    x = 12,775,005,102.22/103,735.50
  6. Step 6: Final answer
    x = 123,149.79

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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.