Home / 100,025.20-138,051.75-57,608.29

Finding the Fourth Proportional to 100,025.20, 138,051.75 and 57,608.29

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Solution

The fourth proportional to 100,025.20, 138,051.75 and 57,608.29 is: 79,509.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,025.20 : 138,051.75 = 57,608.29 : x
  2. Step 2: Convert to fraction form
    100,025.20/138,051.75 = 57,608.29/x
  3. Step 3: Cross multiply
    100,025.20x = 138,051.75 × 57,608.29
  4. Step 4: Simplify right side
    100,025.20x = 7,952,925,249.01
  5. Step 5: Solve for x
    x = 7,952,925,249.01/100,025.20
  6. Step 6: Final answer
    x = 79,509.22

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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.