Home / 209,328.84-313,986.24-91,000.13

Finding the Fourth Proportional to 209,328.84, 313,986.24 and 91,000.13

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Solution

The fourth proportional to 209,328.84, 313,986.24 and 91,000.13 is: 136,497.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,328.84 : 313,986.24 = 91,000.13 : x
  2. Step 2: Convert to fraction form
    209,328.84/313,986.24 = 91,000.13/x
  3. Step 3: Cross multiply
    209,328.84x = 313,986.24 × 91,000.13
  4. Step 4: Simplify right side
    209,328.84x = 28,572,787,088.28
  5. Step 5: Solve for x
    x = 28,572,787,088.28/209,328.84
  6. Step 6: Final answer
    x = 136,497.14

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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.