Home / 100,733.06-139,007.34-55,408.17

Finding the Fourth Proportional to 100,733.06, 139,007.34 and 55,408.17

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Solution

The fourth proportional to 100,733.06, 139,007.34 and 55,408.17 is: 76,460.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,733.06 : 139,007.34 = 55,408.17 : x
  2. Step 2: Convert to fraction form
    100,733.06/139,007.34 = 55,408.17/x
  3. Step 3: Cross multiply
    100,733.06x = 139,007.34 × 55,408.17
  4. Step 4: Simplify right side
    100,733.06x = 7,702,142,325.97
  5. Step 5: Solve for x
    x = 7,702,142,325.97/100,733.06
  6. Step 6: Final answer
    x = 76,460.92

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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.