Home / 140,100.12-209,097.09-128,202.84

Finding the Fourth Proportional to 140,100.12, 209,097.09 and 128,202.84

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Solution

The fourth proportional to 140,100.12, 209,097.09 and 128,202.84 is: 191,340.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,100.12 : 209,097.09 = 128,202.84 : x
  2. Step 2: Convert to fraction form
    140,100.12/209,097.09 = 128,202.84/x
  3. Step 3: Cross multiply
    140,100.12x = 209,097.09 × 128,202.84
  4. Step 4: Simplify right side
    140,100.12x = 26,806,840,773.74
  5. Step 5: Solve for x
    x = 26,806,840,773.74/140,100.12
  6. Step 6: Final answer
    x = 191,340.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.