Home / 139,745,169.60-209,460,290.40-66,996,801.60

Finding the Fourth Proportional to 139,745,169.60, 209,460,290.40 and 66,996,801.60

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Solution

The fourth proportional to 139,745,169.60, 209,460,290.40 and 66,996,801.60 is: 100,419,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,745,169.60 : 209,460,290.40 = 66,996,801.60 : x
  2. Step 2: Convert to fraction form
    139,745,169.60/209,460,290.40 = 66,996,801.60/x
  3. Step 3: Cross multiply
    139,745,169.60x = 209,460,290.40 × 66,996,801.60
  4. Step 4: Simplify right side
    139,745,169.60x = 14,033,169,519,007,186
  5. Step 5: Solve for x
    x = 14,033,169,519,007,186/139,745,169.60
  6. Step 6: Final answer
    x = 100,419,710.81

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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.