Home / 154,030.40-230,872.80-79,121.60

Finding the Fourth Proportional to 154,030.40, 230,872.80 and 79,121.60

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Solution

The fourth proportional to 154,030.40, 230,872.80 and 79,121.60 is: 118,593.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,030.40 : 230,872.80 = 79,121.60 : x
  2. Step 2: Convert to fraction form
    154,030.40/230,872.80 = 79,121.60/x
  3. Step 3: Cross multiply
    154,030.40x = 230,872.80 × 79,121.60
  4. Step 4: Simplify right side
    154,030.40x = 18,267,025,332.48
  5. Step 5: Solve for x
    x = 18,267,025,332.48/154,030.40
  6. Step 6: Final answer
    x = 118,593.64

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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.