Home / 103,336.68-154,602.14-90,585.21

Finding the Fourth Proportional to 103,336.68, 154,602.14 and 90,585.21

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Solution

The fourth proportional to 103,336.68, 154,602.14 and 90,585.21 is: 135,524.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,336.68 : 154,602.14 = 90,585.21 : x
  2. Step 2: Convert to fraction form
    103,336.68/154,602.14 = 90,585.21/x
  3. Step 3: Cross multiply
    103,336.68x = 154,602.14 × 90,585.21
  4. Step 4: Simplify right side
    103,336.68x = 14,004,666,865.42
  5. Step 5: Solve for x
    x = 14,004,666,865.42/103,336.68
  6. Step 6: Final answer
    x = 135,524.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.