Home / 236,158.23-325,901.78-128,728.29

Finding the Fourth Proportional to 236,158.23, 325,901.78 and 128,728.29

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Solution

The fourth proportional to 236,158.23, 325,901.78 and 128,728.29 is: 177,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,158.23 : 325,901.78 = 128,728.29 : x
  2. Step 2: Convert to fraction form
    236,158.23/325,901.78 = 128,728.29/x
  3. Step 3: Cross multiply
    236,158.23x = 325,901.78 × 128,728.29
  4. Step 4: Simplify right side
    236,158.23x = 41,952,778,075.38
  5. Step 5: Solve for x
    x = 41,952,778,075.38/236,158.23
  6. Step 6: Final answer
    x = 177,646.90

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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.