Home / 209,539.84-289,034.40-127,830.76

Finding the Fourth Proportional to 209,539.84, 289,034.40 and 127,830.76

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Solution

The fourth proportional to 209,539.84, 289,034.40 and 127,830.76 is: 176,326.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,539.84 : 289,034.40 = 127,830.76 : x
  2. Step 2: Convert to fraction form
    209,539.84/289,034.40 = 127,830.76/x
  3. Step 3: Cross multiply
    209,539.84x = 289,034.40 × 127,830.76
  4. Step 4: Simplify right side
    209,539.84x = 36,947,487,018.14
  5. Step 5: Solve for x
    x = 36,947,487,018.14/209,539.84
  6. Step 6: Final answer
    x = 176,326.79

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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.