Home / 105,083.42-145,013.60-57,335.80

Finding the Fourth Proportional to 105,083.42, 145,013.60 and 57,335.80

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Solution

The fourth proportional to 105,083.42, 145,013.60 and 57,335.80 is: 79,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,083.42 : 145,013.60 = 57,335.80 : x
  2. Step 2: Convert to fraction form
    105,083.42/145,013.60 = 57,335.80/x
  3. Step 3: Cross multiply
    105,083.42x = 145,013.60 × 57,335.80
  4. Step 4: Simplify right side
    105,083.42x = 8,314,470,766.88
  5. Step 5: Solve for x
    x = 8,314,470,766.88/105,083.42
  6. Step 6: Final answer
    x = 79,122.57

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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.