Home / 85,164,013.80-127,746,020.70-84,268,218.60

Finding the Fourth Proportional to 85,164,013.80, 127,746,020.70 and 84,268,218.60

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Solution

The fourth proportional to 85,164,013.80, 127,746,020.70 and 84,268,218.60 is: 126,402,327.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,164,013.80 : 127,746,020.70 = 84,268,218.60 : x
  2. Step 2: Convert to fraction form
    85,164,013.80/127,746,020.70 = 84,268,218.60/x
  3. Step 3: Cross multiply
    85,164,013.80x = 127,746,020.70 × 84,268,218.60
  4. Step 4: Simplify right side
    85,164,013.80x = 10,764,929,597,627,724
  5. Step 5: Solve for x
    x = 10,764,929,597,627,724/85,164,013.80
  6. Step 6: Final answer
    x = 126,402,327.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.