Home / 235,515.24-325,013.38-128,087.72

Finding the Fourth Proportional to 235,515.24, 325,013.38 and 128,087.72

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Solution

The fourth proportional to 235,515.24, 325,013.38 and 128,087.72 is: 176,762.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,515.24 : 325,013.38 = 128,087.72 : x
  2. Step 2: Convert to fraction form
    235,515.24/325,013.38 = 128,087.72/x
  3. Step 3: Cross multiply
    235,515.24x = 325,013.38 × 128,087.72
  4. Step 4: Simplify right side
    235,515.24x = 41,630,222,813.69
  5. Step 5: Solve for x
    x = 41,630,222,813.69/235,515.24
  6. Step 6: Final answer
    x = 176,762.33

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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.