Home / 154,359.09-212,811.35-111,302.55

Finding the Fourth Proportional to 154,359.09, 212,811.35 and 111,302.55

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Solution

The fourth proportional to 154,359.09, 212,811.35 and 111,302.55 is: 153,450.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,359.09 : 212,811.35 = 111,302.55 : x
  2. Step 2: Convert to fraction form
    154,359.09/212,811.35 = 111,302.55/x
  3. Step 3: Cross multiply
    154,359.09x = 212,811.35 × 111,302.55
  4. Step 4: Simplify right side
    154,359.09x = 23,686,445,367.43
  5. Step 5: Solve for x
    x = 23,686,445,367.43/154,359.09
  6. Step 6: Final answer
    x = 153,450.28

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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.