Home / 147,450.69-203,404.37-99,720.09

Finding the Fourth Proportional to 147,450.69, 203,404.37 and 99,720.09

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Solution

The fourth proportional to 147,450.69, 203,404.37 and 99,720.09 is: 137,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,450.69 : 203,404.37 = 99,720.09 : x
  2. Step 2: Convert to fraction form
    147,450.69/203,404.37 = 99,720.09/x
  3. Step 3: Cross multiply
    147,450.69x = 203,404.37 × 99,720.09
  4. Step 4: Simplify right side
    147,450.69x = 20,283,501,584.19
  5. Step 5: Solve for x
    x = 20,283,501,584.19/147,450.69
  6. Step 6: Final answer
    x = 137,561.25

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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.