Home / 154,485.40-231,533.70-136,989.40

Finding the Fourth Proportional to 154,485.40, 231,533.70 and 136,989.40

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Solution

The fourth proportional to 154,485.40, 231,533.70 and 136,989.40 is: 205,311.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,485.40 : 231,533.70 = 136,989.40 : x
  2. Step 2: Convert to fraction form
    154,485.40/231,533.70 = 136,989.40/x
  3. Step 3: Cross multiply
    154,485.40x = 231,533.70 × 136,989.40
  4. Step 4: Simplify right side
    154,485.40x = 31,717,662,642.78
  5. Step 5: Solve for x
    x = 31,717,662,642.78/154,485.40
  6. Step 6: Final answer
    x = 205,311.72

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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.