Home / 154,316.40-231,474.60-128,072.40

Finding the Fourth Proportional to 154,316.40, 231,474.60 and 128,072.40

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Solution

The fourth proportional to 154,316.40, 231,474.60 and 128,072.40 is: 192,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,316.40 : 231,474.60 = 128,072.40 : x
  2. Step 2: Convert to fraction form
    154,316.40/231,474.60 = 128,072.40/x
  3. Step 3: Cross multiply
    154,316.40x = 231,474.60 × 128,072.40
  4. Step 4: Simplify right side
    154,316.40x = 29,645,507,561.04
  5. Step 5: Solve for x
    x = 29,645,507,561.04/154,316.40
  6. Step 6: Final answer
    x = 192,108.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.