Home / 123,749.84-170,765.32-72,764.64

Finding the Fourth Proportional to 123,749.84, 170,765.32 and 72,764.64

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Solution

The fourth proportional to 123,749.84, 170,765.32 and 72,764.64 is: 100,409.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,749.84 : 170,765.32 = 72,764.64 : x
  2. Step 2: Convert to fraction form
    123,749.84/170,765.32 = 72,764.64/x
  3. Step 3: Cross multiply
    123,749.84x = 170,765.32 × 72,764.64
  4. Step 4: Simplify right side
    123,749.84x = 12,425,677,034.28
  5. Step 5: Solve for x
    x = 12,425,677,034.28/123,749.84
  6. Step 6: Final answer
    x = 100,409.64

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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.