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Finding the Fourth Proportional to 154,367.73, 213,037.43 and 86,390.91

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Solution

The fourth proportional to 154,367.73, 213,037.43 and 86,390.91 is: 119,225.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,367.73 : 213,037.43 = 86,390.91 : x
  2. Step 2: Convert to fraction form
    154,367.73/213,037.43 = 86,390.91/x
  3. Step 3: Cross multiply
    154,367.73x = 213,037.43 × 86,390.91
  4. Step 4: Simplify right side
    154,367.73x = 18,404,497,009.81
  5. Step 5: Solve for x
    x = 18,404,497,009.81/154,367.73
  6. Step 6: Final answer
    x = 119,225.03

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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.