Home / 105,513.92-145,603.68-57,758.12

Finding the Fourth Proportional to 105,513.92, 145,603.68 and 57,758.12

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Solution

The fourth proportional to 105,513.92, 145,603.68 and 57,758.12 is: 79,703.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,513.92 : 145,603.68 = 57,758.12 : x
  2. Step 2: Convert to fraction form
    105,513.92/145,603.68 = 57,758.12/x
  3. Step 3: Cross multiply
    105,513.92x = 145,603.68 × 57,758.12
  4. Step 4: Simplify right side
    105,513.92x = 8,409,794,821.88
  5. Step 5: Solve for x
    x = 8,409,794,821.88/105,513.92
  6. Step 6: Final answer
    x = 79,703.18

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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.