Home / 209,562.46-289,152.42-137,071.61

Finding the Fourth Proportional to 209,562.46, 289,152.42 and 137,071.61

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Solution

The fourth proportional to 209,562.46, 289,152.42 and 137,071.61 is: 189,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,562.46 : 289,152.42 = 137,071.61 : x
  2. Step 2: Convert to fraction form
    209,562.46/289,152.42 = 137,071.61/x
  3. Step 3: Cross multiply
    209,562.46x = 289,152.42 × 137,071.61
  4. Step 4: Simplify right side
    209,562.46x = 39,634,586,869.34
  5. Step 5: Solve for x
    x = 39,634,586,869.34/209,562.46
  6. Step 6: Final answer
    x = 189,130.19

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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.