Home / 189,379.28-284,447.10-118,428.14

Finding the Fourth Proportional to 189,379.28, 284,447.10 and 118,428.14

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Solution

The fourth proportional to 189,379.28, 284,447.10 and 118,428.14 is: 177,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,379.28 : 284,447.10 = 118,428.14 : x
  2. Step 2: Convert to fraction form
    189,379.28/284,447.10 = 118,428.14/x
  3. Step 3: Cross multiply
    189,379.28x = 284,447.10 × 118,428.14
  4. Step 4: Simplify right side
    189,379.28x = 33,686,540,981.39
  5. Step 5: Solve for x
    x = 33,686,540,981.39/189,379.28
  6. Step 6: Final answer
    x = 177,878.70

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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.