Home / 105,195.33-145,170.09-57,448.68

Finding the Fourth Proportional to 105,195.33, 145,170.09 and 57,448.68

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Solution

The fourth proportional to 105,195.33, 145,170.09 and 57,448.68 is: 79,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,195.33 : 145,170.09 = 57,448.68 : x
  2. Step 2: Convert to fraction form
    105,195.33/145,170.09 = 57,448.68/x
  3. Step 3: Cross multiply
    105,195.33x = 145,170.09 × 57,448.68
  4. Step 4: Simplify right side
    105,195.33x = 8,339,829,501.59
  5. Step 5: Solve for x
    x = 8,339,829,501.59/105,195.33
  6. Step 6: Final answer
    x = 79,279.47

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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.