Home / 191,209.62-286,812-85,954.18

Finding the Fourth Proportional to 191,209.62, 286,812 and 85,954.18

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Solution

The fourth proportional to 191,209.62, 286,812 and 85,954.18 is: 128,930.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,209.62 : 286,812 = 85,954.18 : x
  2. Step 2: Convert to fraction form
    191,209.62/286,812 = 85,954.18/x
  3. Step 3: Cross multiply
    191,209.62x = 286,812 × 85,954.18
  4. Step 4: Simplify right side
    191,209.62x = 24,652,690,274.16
  5. Step 5: Solve for x
    x = 24,652,690,274.16/191,209.62
  6. Step 6: Final answer
    x = 128,930.18

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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.