Home / 99,403.36-149,074.80-28,331.80

Finding the Fourth Proportional to 99,403.36, 149,074.80 and 28,331.80

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Solution

The fourth proportional to 99,403.36, 149,074.80 and 28,331.80 is: 42,489.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.36 : 149,074.80 = 28,331.80 : x
  2. Step 2: Convert to fraction form
    99,403.36/149,074.80 = 28,331.80/x
  3. Step 3: Cross multiply
    99,403.36x = 149,074.80 × 28,331.80
  4. Step 4: Simplify right side
    99,403.36x = 4,223,557,418.64
  5. Step 5: Solve for x
    x = 4,223,557,418.64/99,403.36
  6. Step 6: Final answer
    x = 42,489.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.