Home / 154,057.20-231,085.80-130,437.60

Finding the Fourth Proportional to 154,057.20, 231,085.80 and 130,437.60

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Solution

The fourth proportional to 154,057.20, 231,085.80 and 130,437.60 is: 195,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,057.20 : 231,085.80 = 130,437.60 : x
  2. Step 2: Convert to fraction form
    154,057.20/231,085.80 = 130,437.60/x
  3. Step 3: Cross multiply
    154,057.20x = 231,085.80 × 130,437.60
  4. Step 4: Simplify right side
    154,057.20x = 30,142,277,146.08
  5. Step 5: Solve for x
    x = 30,142,277,146.08/154,057.20
  6. Step 6: Final answer
    x = 195,656.40

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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.