Home / 236,154.80-325,888.44-128,720.72

Finding the Fourth Proportional to 236,154.80, 325,888.44 and 128,720.72

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Solution

The fourth proportional to 236,154.80, 325,888.44 and 128,720.72 is: 177,631.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,154.80 : 325,888.44 = 128,720.72 : x
  2. Step 2: Convert to fraction form
    236,154.80/325,888.44 = 128,720.72/x
  3. Step 3: Cross multiply
    236,154.80x = 325,888.44 × 128,720.72
  4. Step 4: Simplify right side
    236,154.80x = 41,948,594,636.48
  5. Step 5: Solve for x
    x = 41,948,594,636.48/236,154.80
  6. Step 6: Final answer
    x = 177,631.77

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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.