Home / 236,346.51-326,159.21-128,918.85

Finding the Fourth Proportional to 236,346.51, 326,159.21 and 128,918.85

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Solution

The fourth proportional to 236,346.51, 326,159.21 and 128,918.85 is: 177,908.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,346.51 : 326,159.21 = 128,918.85 : x
  2. Step 2: Convert to fraction form
    236,346.51/326,159.21 = 128,918.85/x
  3. Step 3: Cross multiply
    236,346.51x = 326,159.21 × 128,918.85
  4. Step 4: Simplify right side
    236,346.51x = 42,048,070,270.11
  5. Step 5: Solve for x
    x = 42,048,070,270.11/236,346.51
  6. Step 6: Final answer
    x = 177,908.57

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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.