Home / 154,650.57-213,420.36-86,682.70

Finding the Fourth Proportional to 154,650.57, 213,420.36 and 86,682.70

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Solution

The fourth proportional to 154,650.57, 213,420.36 and 86,682.70 is: 119,623.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,650.57 : 213,420.36 = 86,682.70 : x
  2. Step 2: Convert to fraction form
    154,650.57/213,420.36 = 86,682.70/x
  3. Step 3: Cross multiply
    154,650.57x = 213,420.36 × 86,682.70
  4. Step 4: Simplify right side
    154,650.57x = 18,499,853,631.61
  5. Step 5: Solve for x
    x = 18,499,853,631.61/154,650.57
  6. Step 6: Final answer
    x = 119,623.58

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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.