Home / 143,815.09-198,478.86-107,453.45

Finding the Fourth Proportional to 143,815.09, 198,478.86 and 107,453.45

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Solution

The fourth proportional to 143,815.09, 198,478.86 and 107,453.45 is: 148,296.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,815.09 : 198,478.86 = 107,453.45 : x
  2. Step 2: Convert to fraction form
    143,815.09/198,478.86 = 107,453.45/x
  3. Step 3: Cross multiply
    143,815.09x = 198,478.86 × 107,453.45
  4. Step 4: Simplify right side
    143,815.09x = 21,327,237,266.67
  5. Step 5: Solve for x
    x = 21,327,237,266.67/143,815.09
  6. Step 6: Final answer
    x = 148,296.24

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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.