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Finding the Fourth Proportional to 154,562.40, 213,298.80 and 86,578.80

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Solution

The fourth proportional to 154,562.40, 213,298.80 and 86,578.80 is: 119,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,562.40 : 213,298.80 = 86,578.80 : x
  2. Step 2: Convert to fraction form
    154,562.40/213,298.80 = 86,578.80/x
  3. Step 3: Cross multiply
    154,562.40x = 213,298.80 × 86,578.80
  4. Step 4: Simplify right side
    154,562.40x = 18,467,154,145.44
  5. Step 5: Solve for x
    x = 18,467,154,145.44/154,562.40
  6. Step 6: Final answer
    x = 119,480.25

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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.