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Finding the Fourth Proportional to 158,426.01, 218,636.64 and 90,464.81

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Solution

The fourth proportional to 158,426.01, 218,636.64 and 90,464.81 is: 124,846.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,426.01 : 218,636.64 = 90,464.81 : x
  2. Step 2: Convert to fraction form
    158,426.01/218,636.64 = 90,464.81/x
  3. Step 3: Cross multiply
    158,426.01x = 218,636.64 × 90,464.81
  4. Step 4: Simplify right side
    158,426.01x = 19,778,921,872.80
  5. Step 5: Solve for x
    x = 19,778,921,872.80/158,426.01
  6. Step 6: Final answer
    x = 124,846.43

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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.