Home / 123,738.35-170,762.70-72,741.75

Finding the Fourth Proportional to 123,738.35, 170,762.70 and 72,741.75

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Solution

The fourth proportional to 123,738.35, 170,762.70 and 72,741.75 is: 100,385.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,738.35 : 170,762.70 = 72,741.75 : x
  2. Step 2: Convert to fraction form
    123,738.35/170,762.70 = 72,741.75/x
  3. Step 3: Cross multiply
    123,738.35x = 170,762.70 × 72,741.75
  4. Step 4: Simplify right side
    123,738.35x = 12,421,577,632.73
  5. Step 5: Solve for x
    x = 12,421,577,632.73/123,738.35
  6. Step 6: Final answer
    x = 100,385.84

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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.