Home / 154,103.24-212,663.26-86,121.35

Finding the Fourth Proportional to 154,103.24, 212,663.26 and 86,121.35

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Solution

The fourth proportional to 154,103.24, 212,663.26 and 86,121.35 is: 118,847.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,103.24 : 212,663.26 = 86,121.35 : x
  2. Step 2: Convert to fraction form
    154,103.24/212,663.26 = 86,121.35/x
  3. Step 3: Cross multiply
    154,103.24x = 212,663.26 × 86,121.35
  4. Step 4: Simplify right side
    154,103.24x = 18,314,847,728.76
  5. Step 5: Solve for x
    x = 18,314,847,728.76/154,103.24
  6. Step 6: Final answer
    x = 118,847.91

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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.