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Finding the Fourth Proportional to 154,646.37, 213,426.93 and 86,674.80

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Solution

The fourth proportional to 154,646.37, 213,426.93 and 86,674.80 is: 119,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,646.37 : 213,426.93 = 86,674.80 : x
  2. Step 2: Convert to fraction form
    154,646.37/213,426.93 = 86,674.80/x
  3. Step 3: Cross multiply
    154,646.37x = 213,426.93 × 86,674.80
  4. Step 4: Simplify right side
    154,646.37x = 18,498,736,472.36
  5. Step 5: Solve for x
    x = 18,498,736,472.36/154,646.37
  6. Step 6: Final answer
    x = 119,619.60

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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.