Home / 154,330.90-212,975.49-87,265.30

Finding the Fourth Proportional to 154,330.90, 212,975.49 and 87,265.30

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Solution

The fourth proportional to 154,330.90, 212,975.49 and 87,265.30 is: 120,425.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,330.90 : 212,975.49 = 87,265.30 : x
  2. Step 2: Convert to fraction form
    154,330.90/212,975.49 = 87,265.30/x
  3. Step 3: Cross multiply
    154,330.90x = 212,975.49 × 87,265.30
  4. Step 4: Simplify right side
    154,330.90x = 18,585,370,027.50
  5. Step 5: Solve for x
    x = 18,585,370,027.50/154,330.90
  6. Step 6: Final answer
    x = 120,425.46

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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.