Home / 213,145.12-294,088.72-136,629.28

Finding the Fourth Proportional to 213,145.12, 294,088.72 and 136,629.28

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Solution

The fourth proportional to 213,145.12, 294,088.72 and 136,629.28 is: 188,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,145.12 : 294,088.72 = 136,629.28 : x
  2. Step 2: Convert to fraction form
    213,145.12/294,088.72 = 136,629.28/x
  3. Step 3: Cross multiply
    213,145.12x = 294,088.72 × 136,629.28
  4. Step 4: Simplify right side
    213,145.12x = 40,181,130,069.72
  5. Step 5: Solve for x
    x = 40,181,130,069.72/213,145.12
  6. Step 6: Final answer
    x = 188,515.36

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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.