Home / 213,128.08-294,100.80-122,484.28

Finding the Fourth Proportional to 213,128.08, 294,100.80 and 122,484.28

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Solution

The fourth proportional to 213,128.08, 294,100.80 and 122,484.28 is: 169,019.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,128.08 : 294,100.80 = 122,484.28 : x
  2. Step 2: Convert to fraction form
    213,128.08/294,100.80 = 122,484.28/x
  3. Step 3: Cross multiply
    213,128.08x = 294,100.80 × 122,484.28
  4. Step 4: Simplify right side
    213,128.08x = 36,022,724,735.42
  5. Step 5: Solve for x
    x = 36,022,724,735.42/213,128.08
  6. Step 6: Final answer
    x = 169,019.14

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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.