Home / 209,148.67-288,479.23-137,505.79

Finding the Fourth Proportional to 209,148.67, 288,479.23 and 137,505.79

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Solution

The fourth proportional to 209,148.67, 288,479.23 and 137,505.79 is: 189,662.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,148.67 : 288,479.23 = 137,505.79 : x
  2. Step 2: Convert to fraction form
    209,148.67/288,479.23 = 137,505.79/x
  3. Step 3: Cross multiply
    209,148.67x = 288,479.23 × 137,505.79
  4. Step 4: Simplify right side
    209,148.67x = 39,667,564,419.74
  5. Step 5: Solve for x
    x = 39,667,564,419.74/209,148.67
  6. Step 6: Final answer
    x = 189,662.04

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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.