Home / 105,512.75-145,608.01-57,770.54

Finding the Fourth Proportional to 105,512.75, 145,608.01 and 57,770.54

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Solution

The fourth proportional to 105,512.75, 145,608.01 and 57,770.54 is: 79,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,512.75 : 145,608.01 = 57,770.54 : x
  2. Step 2: Convert to fraction form
    105,512.75/145,608.01 = 57,770.54/x
  3. Step 3: Cross multiply
    105,512.75x = 145,608.01 × 57,770.54
  4. Step 4: Simplify right side
    105,512.75x = 8,411,852,637.99
  5. Step 5: Solve for x
    x = 8,411,852,637.99/105,512.75
  6. Step 6: Final answer
    x = 79,723.57

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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.