Home / 236,345.51-326,157.83-128,917.85

Finding the Fourth Proportional to 236,345.51, 326,157.83 and 128,917.85

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Solution

The fourth proportional to 236,345.51, 326,157.83 and 128,917.85 is: 177,907.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,345.51 : 326,157.83 = 128,917.85 : x
  2. Step 2: Convert to fraction form
    236,345.51/326,157.83 = 128,917.85/x
  3. Step 3: Cross multiply
    236,345.51x = 326,157.83 × 128,917.85
  4. Step 4: Simplify right side
    236,345.51x = 42,047,566,204.27
  5. Step 5: Solve for x
    x = 42,047,566,204.27/236,345.51
  6. Step 6: Final answer
    x = 177,907.19

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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.