Home / 154,702.32-213,481.08-87,630

Finding the Fourth Proportional to 154,702.32, 213,481.08 and 87,630

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Solution

The fourth proportional to 154,702.32, 213,481.08 and 87,630 is: 120,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,702.32 : 213,481.08 = 87,630 : x
  2. Step 2: Convert to fraction form
    154,702.32/213,481.08 = 87,630/x
  3. Step 3: Cross multiply
    154,702.32x = 213,481.08 × 87,630
  4. Step 4: Simplify right side
    154,702.32x = 18,707,347,040.40
  5. Step 5: Solve for x
    x = 18,707,347,040.40/154,702.32
  6. Step 6: Final answer
    x = 120,924.80

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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.