Home / 105,507.38-145,594.72-57,751.68

Finding the Fourth Proportional to 105,507.38, 145,594.72 and 57,751.68

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Solution

The fourth proportional to 105,507.38, 145,594.72 and 57,751.68 is: 79,694.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,507.38 : 145,594.72 = 57,751.68 : x
  2. Step 2: Convert to fraction form
    105,507.38/145,594.72 = 57,751.68/x
  3. Step 3: Cross multiply
    105,507.38x = 145,594.72 × 57,751.68
  4. Step 4: Simplify right side
    105,507.38x = 8,408,339,679.13
  5. Step 5: Solve for x
    x = 8,408,339,679.13/105,507.38
  6. Step 6: Final answer
    x = 79,694.33

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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.