Home / 105,171.44-145,140.02-57,428.42

Finding the Fourth Proportional to 105,171.44, 145,140.02 and 57,428.42

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Solution

The fourth proportional to 105,171.44, 145,140.02 and 57,428.42 is: 79,253.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,171.44 : 145,140.02 = 57,428.42 : x
  2. Step 2: Convert to fraction form
    105,171.44/145,140.02 = 57,428.42/x
  3. Step 3: Cross multiply
    105,171.44x = 145,140.02 × 57,428.42
  4. Step 4: Simplify right side
    105,171.44x = 8,335,162,027.37
  5. Step 5: Solve for x
    x = 8,335,162,027.37/105,171.44
  6. Step 6: Final answer
    x = 79,253.09

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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.