Home / 209,981.80-314,972.70-130,083.40

Finding the Fourth Proportional to 209,981.80, 314,972.70 and 130,083.40

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Solution

The fourth proportional to 209,981.80, 314,972.70 and 130,083.40 is: 195,125.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,981.80 : 314,972.70 = 130,083.40 : x
  2. Step 2: Convert to fraction form
    209,981.80/314,972.70 = 130,083.40/x
  3. Step 3: Cross multiply
    209,981.80x = 314,972.70 × 130,083.40
  4. Step 4: Simplify right side
    209,981.80x = 40,972,719,723.18
  5. Step 5: Solve for x
    x = 40,972,719,723.18/209,981.80
  6. Step 6: Final answer
    x = 195,125.10

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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.