Home / 209,512.30-289,133.50-118,872.09

Finding the Fourth Proportional to 209,512.30, 289,133.50 and 118,872.09

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Solution

The fourth proportional to 209,512.30, 289,133.50 and 118,872.09 is: 164,047.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,512.30 : 289,133.50 = 118,872.09 : x
  2. Step 2: Convert to fraction form
    209,512.30/289,133.50 = 118,872.09/x
  3. Step 3: Cross multiply
    209,512.30x = 289,133.50 × 118,872.09
  4. Step 4: Simplify right side
    209,512.30x = 34,369,903,434.02
  5. Step 5: Solve for x
    x = 34,369,903,434.02/209,512.30
  6. Step 6: Final answer
    x = 164,047.19

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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.