Home / 209,465.79-289,063.45-113,972.56

Finding the Fourth Proportional to 209,465.79, 289,063.45 and 113,972.56

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Solution

The fourth proportional to 209,465.79, 289,063.45 and 113,972.56 is: 157,282.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,465.79 : 289,063.45 = 113,972.56 : x
  2. Step 2: Convert to fraction form
    209,465.79/289,063.45 = 113,972.56/x
  3. Step 3: Cross multiply
    209,465.79x = 289,063.45 × 113,972.56
  4. Step 4: Simplify right side
    209,465.79x = 32,945,301,398.93
  5. Step 5: Solve for x
    x = 32,945,301,398.93/209,465.79
  6. Step 6: Final answer
    x = 157,282.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.