Home / 154,975.07-213,858.20-86,983.67

Finding the Fourth Proportional to 154,975.07, 213,858.20 and 86,983.67

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Solution

The fourth proportional to 154,975.07, 213,858.20 and 86,983.67 is: 120,033.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,975.07 : 213,858.20 = 86,983.67 : x
  2. Step 2: Convert to fraction form
    154,975.07/213,858.20 = 86,983.67/x
  3. Step 3: Cross multiply
    154,975.07x = 213,858.20 × 86,983.67
  4. Step 4: Simplify right side
    154,975.07x = 18,602,171,095.59
  5. Step 5: Solve for x
    x = 18,602,171,095.59/154,975.07
  6. Step 6: Final answer
    x = 120,033.31

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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.