Home / 103,392.03-142,735.20-69,578.31

Finding the Fourth Proportional to 103,392.03, 142,735.20 and 69,578.31

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Solution

The fourth proportional to 103,392.03, 142,735.20 and 69,578.31 is: 96,054.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,392.03 : 142,735.20 = 69,578.31 : x
  2. Step 2: Convert to fraction form
    103,392.03/142,735.20 = 69,578.31/x
  3. Step 3: Cross multiply
    103,392.03x = 142,735.20 × 69,578.31
  4. Step 4: Simplify right side
    103,392.03x = 9,931,273,993.51
  5. Step 5: Solve for x
    x = 9,931,273,993.51/103,392.03
  6. Step 6: Final answer
    x = 96,054.54

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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.