Home / 100,851.18-139,173.48-55,528.22

Finding the Fourth Proportional to 100,851.18, 139,173.48 and 55,528.22

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Solution

The fourth proportional to 100,851.18, 139,173.48 and 55,528.22 is: 76,628.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,851.18 : 139,173.48 = 55,528.22 : x
  2. Step 2: Convert to fraction form
    100,851.18/139,173.48 = 55,528.22/x
  3. Step 3: Cross multiply
    100,851.18x = 139,173.48 × 55,528.22
  4. Step 4: Simplify right side
    100,851.18x = 7,728,054,919.74
  5. Step 5: Solve for x
    x = 7,728,054,919.74/100,851.18
  6. Step 6: Final answer
    x = 76,628.30

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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.