Home / 100,887.74-139,225.97-55,567.28

Finding the Fourth Proportional to 100,887.74, 139,225.97 and 55,567.28

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Solution

The fourth proportional to 100,887.74, 139,225.97 and 55,567.28 is: 76,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,887.74 : 139,225.97 = 55,567.28 : x
  2. Step 2: Convert to fraction form
    100,887.74/139,225.97 = 55,567.28/x
  3. Step 3: Cross multiply
    100,887.74x = 139,225.97 × 55,567.28
  4. Step 4: Simplify right side
    100,887.74x = 7,736,408,945.24
  5. Step 5: Solve for x
    x = 7,736,408,945.24/100,887.74
  6. Step 6: Final answer
    x = 76,683.34

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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.