Home / 105,183.84-145,155.78-57,439.02

Finding the Fourth Proportional to 105,183.84, 145,155.78 and 57,439.02

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Solution

The fourth proportional to 105,183.84, 145,155.78 and 57,439.02 is: 79,266.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,183.84 : 145,155.78 = 57,439.02 : x
  2. Step 2: Convert to fraction form
    105,183.84/145,155.78 = 57,439.02/x
  3. Step 3: Cross multiply
    105,183.84x = 145,155.78 × 57,439.02
  4. Step 4: Simplify right side
    105,183.84x = 8,337,605,750.54
  5. Step 5: Solve for x
    x = 8,337,605,750.54/105,183.84
  6. Step 6: Final answer
    x = 79,266.98

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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.