Home / 85,217,266.80-127,825,900.20-81,816,044.40

Finding the Fourth Proportional to 85,217,266.80, 127,825,900.20 and 81,816,044.40

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Solution

The fourth proportional to 85,217,266.80, 127,825,900.20 and 81,816,044.40 is: 122,724,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,217,266.80 : 127,825,900.20 = 81,816,044.40 : x
  2. Step 2: Convert to fraction form
    85,217,266.80/127,825,900.20 = 81,816,044.40/x
  3. Step 3: Cross multiply
    85,217,266.80x = 127,825,900.20 × 81,816,044.40
  4. Step 4: Simplify right side
    85,217,266.80x = 10,458,209,526,233,170
  5. Step 5: Solve for x
    x = 10,458,209,526,233,170/85,217,266.80
  6. Step 6: Final answer
    x = 122,724,066.60

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1.5x scale

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.