Home / 100,435.50-138,600.60-55,114.24

Finding the Fourth Proportional to 100,435.50, 138,600.60 and 55,114.24

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Solution

The fourth proportional to 100,435.50, 138,600.60 and 55,114.24 is: 76,057.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,435.50 : 138,600.60 = 55,114.24 : x
  2. Step 2: Convert to fraction form
    100,435.50/138,600.60 = 55,114.24/x
  3. Step 3: Cross multiply
    100,435.50x = 138,600.60 × 55,114.24
  4. Step 4: Simplify right side
    100,435.50x = 7,638,866,386.04
  5. Step 5: Solve for x
    x = 7,638,866,386.04/100,435.50
  6. Step 6: Final answer
    x = 76,057.43

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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.