Home / 105,396.39-145,443.60-57,650.13

Finding the Fourth Proportional to 105,396.39, 145,443.60 and 57,650.13

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Solution

The fourth proportional to 105,396.39, 145,443.60 and 57,650.13 is: 79,555.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,396.39 : 145,443.60 = 57,650.13 : x
  2. Step 2: Convert to fraction form
    105,396.39/145,443.60 = 57,650.13/x
  3. Step 3: Cross multiply
    105,396.39x = 145,443.60 × 57,650.13
  4. Step 4: Simplify right side
    105,396.39x = 8,384,842,447.67
  5. Step 5: Solve for x
    x = 8,384,842,447.67/105,396.39
  6. Step 6: Final answer
    x = 79,555.31

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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.