Home / 189,928.05-285,032.16-90,088.56

Finding the Fourth Proportional to 189,928.05, 285,032.16 and 90,088.56

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Solution

The fourth proportional to 189,928.05, 285,032.16 and 90,088.56 is: 135,199.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,928.05 : 285,032.16 = 90,088.56 : x
  2. Step 2: Convert to fraction form
    189,928.05/285,032.16 = 90,088.56/x
  3. Step 3: Cross multiply
    189,928.05x = 285,032.16 × 90,088.56
  4. Step 4: Simplify right side
    189,928.05x = 25,678,136,848.09
  5. Step 5: Solve for x
    x = 25,678,136,848.09/189,928.05
  6. Step 6: Final answer
    x = 135,199.29

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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.