Home / 209,485.19-289,087.13-113,990.24

Finding the Fourth Proportional to 209,485.19, 289,087.13 and 113,990.24

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Solution

The fourth proportional to 209,485.19, 289,087.13 and 113,990.24 is: 157,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,485.19 : 289,087.13 = 113,990.24 : x
  2. Step 2: Convert to fraction form
    209,485.19/289,087.13 = 113,990.24/x
  3. Step 3: Cross multiply
    209,485.19x = 289,087.13 × 113,990.24
  4. Step 4: Simplify right side
    209,485.19x = 32,953,111,329.61
  5. Step 5: Solve for x
    x = 32,953,111,329.61/209,485.19
  6. Step 6: Final answer
    x = 157,305.21

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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.