Home / 154,483.78-213,185.97-86,501.38

Finding the Fourth Proportional to 154,483.78, 213,185.97 and 86,501.38

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Solution

The fourth proportional to 154,483.78, 213,185.97 and 86,501.38 is: 119,370.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,483.78 : 213,185.97 = 86,501.38 : x
  2. Step 2: Convert to fraction form
    154,483.78/213,185.97 = 86,501.38/x
  3. Step 3: Cross multiply
    154,483.78x = 213,185.97 × 86,501.38
  4. Step 4: Simplify right side
    154,483.78x = 18,440,880,601.64
  5. Step 5: Solve for x
    x = 18,440,880,601.64/154,483.78
  6. Step 6: Final answer
    x = 119,370.98

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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.