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Finding the Fourth Proportional to 154,573.92, 213,320 and 86,586.92

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Solution

The fourth proportional to 154,573.92, 213,320 and 86,586.92 is: 119,494.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,573.92 : 213,320 = 86,586.92 : x
  2. Step 2: Convert to fraction form
    154,573.92/213,320 = 86,586.92/x
  3. Step 3: Cross multiply
    154,573.92x = 213,320 × 86,586.92
  4. Step 4: Simplify right side
    154,573.92x = 18,470,721,774.40
  5. Step 5: Solve for x
    x = 18,470,721,774.40/154,573.92
  6. Step 6: Final answer
    x = 119,494.43

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1.5x scale

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.