Home / 101,078.75-139,443.63-58,612.68

Finding the Fourth Proportional to 101,078.75, 139,443.63 and 58,612.68

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Solution

The fourth proportional to 101,078.75, 139,443.63 and 58,612.68 is: 80,859.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,078.75 : 139,443.63 = 58,612.68 : x
  2. Step 2: Convert to fraction form
    101,078.75/139,443.63 = 58,612.68/x
  3. Step 3: Cross multiply
    101,078.75x = 139,443.63 × 58,612.68
  4. Step 4: Simplify right side
    101,078.75x = 8,173,164,643.43
  5. Step 5: Solve for x
    x = 8,173,164,643.43/101,078.75
  6. Step 6: Final answer
    x = 80,859.37

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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.