Home / 105,391.99-145,444.40-57,645.33

Finding the Fourth Proportional to 105,391.99, 145,444.40 and 57,645.33

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Solution

The fourth proportional to 105,391.99, 145,444.40 and 57,645.33 is: 79,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,391.99 : 145,444.40 = 57,645.33 : x
  2. Step 2: Convert to fraction form
    105,391.99/145,444.40 = 57,645.33/x
  3. Step 3: Cross multiply
    105,391.99x = 145,444.40 × 57,645.33
  4. Step 4: Simplify right side
    105,391.99x = 8,384,190,146.43
  5. Step 5: Solve for x
    x = 8,384,190,146.43/105,391.99
  6. Step 6: Final answer
    x = 79,552.45

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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.