Home / 236,345.34-326,161.01-128,919.21

Finding the Fourth Proportional to 236,345.34, 326,161.01 and 128,919.21

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Solution

The fourth proportional to 236,345.34, 326,161.01 and 128,919.21 is: 177,910.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,345.34 : 326,161.01 = 128,919.21 : x
  2. Step 2: Convert to fraction form
    236,345.34/326,161.01 = 128,919.21/x
  3. Step 3: Cross multiply
    236,345.34x = 326,161.01 × 128,919.21
  4. Step 4: Simplify right side
    236,345.34x = 42,048,420,675.85
  5. Step 5: Solve for x
    x = 42,048,420,675.85/236,345.34
  6. Step 6: Final answer
    x = 177,910.93

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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.