Home / 105,173.44-145,142.78-57,430.42

Finding the Fourth Proportional to 105,173.44, 145,142.78 and 57,430.42

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Solution

The fourth proportional to 105,173.44, 145,142.78 and 57,430.42 is: 79,255.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,173.44 : 145,142.78 = 57,430.42 : x
  2. Step 2: Convert to fraction form
    105,173.44/145,142.78 = 57,430.42/x
  3. Step 3: Cross multiply
    105,173.44x = 145,142.78 × 57,430.42
  4. Step 4: Simplify right side
    105,173.44x = 8,335,610,815.37
  5. Step 5: Solve for x
    x = 8,335,610,815.37/105,173.44
  6. Step 6: Final answer
    x = 79,255.85

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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.