Home / 103,863.09-155,933.01-70,242.06

Finding the Fourth Proportional to 103,863.09, 155,933.01 and 70,242.06

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Solution

The fourth proportional to 103,863.09, 155,933.01 and 70,242.06 is: 105,456.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,863.09 : 155,933.01 = 70,242.06 : x
  2. Step 2: Convert to fraction form
    103,863.09/155,933.01 = 70,242.06/x
  3. Step 3: Cross multiply
    103,863.09x = 155,933.01 × 70,242.06
  4. Step 4: Simplify right side
    103,863.09x = 10,953,055,844.40
  5. Step 5: Solve for x
    x = 10,953,055,844.40/103,863.09
  6. Step 6: Final answer
    x = 105,456.67

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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.