Home / 154,307.85-212,964.44-86,328.60

Finding the Fourth Proportional to 154,307.85, 212,964.44 and 86,328.60

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Solution

The fourth proportional to 154,307.85, 212,964.44 and 86,328.60 is: 119,144.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,307.85 : 212,964.44 = 86,328.60 : x
  2. Step 2: Convert to fraction form
    154,307.85/212,964.44 = 86,328.60/x
  3. Step 3: Cross multiply
    154,307.85x = 212,964.44 × 86,328.60
  4. Step 4: Simplify right side
    154,307.85x = 18,384,921,523.34
  5. Step 5: Solve for x
    x = 18,384,921,523.34/154,307.85
  6. Step 6: Final answer
    x = 119,144.43

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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.