Home / 154,811.54-213,641.69-85,902.25

Finding the Fourth Proportional to 154,811.54, 213,641.69 and 85,902.25

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Solution

The fourth proportional to 154,811.54, 213,641.69 and 85,902.25 is: 118,546.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,811.54 : 213,641.69 = 85,902.25 : x
  2. Step 2: Convert to fraction form
    154,811.54/213,641.69 = 85,902.25/x
  3. Step 3: Cross multiply
    154,811.54x = 213,641.69 × 85,902.25
  4. Step 4: Simplify right side
    154,811.54x = 18,352,300,901.19
  5. Step 5: Solve for x
    x = 18,352,300,901.19/154,811.54
  6. Step 6: Final answer
    x = 118,546.08

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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.