Home / 154,085.22-212,638.83-87,017.22

Finding the Fourth Proportional to 154,085.22, 212,638.83 and 87,017.22

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Solution

The fourth proportional to 154,085.22, 212,638.83 and 87,017.22 is: 120,084.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,085.22 : 212,638.83 = 87,017.22 : x
  2. Step 2: Convert to fraction form
    154,085.22/212,638.83 = 87,017.22/x
  3. Step 3: Cross multiply
    154,085.22x = 212,638.83 × 87,017.22
  4. Step 4: Simplify right side
    154,085.22x = 18,503,239,850.65
  5. Step 5: Solve for x
    x = 18,503,239,850.65/154,085.22
  6. Step 6: Final answer
    x = 120,084.46

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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.