Home / 85,248,301.80-127,872,452.70-78,193,914.60

Finding the Fourth Proportional to 85,248,301.80, 127,872,452.70 and 78,193,914.60

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Solution

The fourth proportional to 85,248,301.80, 127,872,452.70 and 78,193,914.60 is: 117,290,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248,301.80 : 127,872,452.70 = 78,193,914.60 : x
  2. Step 2: Convert to fraction form
    85,248,301.80/127,872,452.70 = 78,193,914.60/x
  3. Step 3: Cross multiply
    85,248,301.80x = 127,872,452.70 × 78,193,914.60
  4. Step 4: Simplify right side
    85,248,301.80x = 9,998,847,646,116,338
  5. Step 5: Solve for x
    x = 9,998,847,646,116,338/85,248,301.80
  6. Step 6: Final answer
    x = 117,290,871.90

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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.