Home / 71,218,135.20-106,827,202.80-66,116,301.60

Finding the Fourth Proportional to 71,218,135.20, 106,827,202.80 and 66,116,301.60

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Solution

The fourth proportional to 71,218,135.20, 106,827,202.80 and 66,116,301.60 is: 99,174,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,218,135.20 : 106,827,202.80 = 66,116,301.60 : x
  2. Step 2: Convert to fraction form
    71,218,135.20/106,827,202.80 = 66,116,301.60/x
  3. Step 3: Cross multiply
    71,218,135.20x = 106,827,202.80 × 66,116,301.60
  4. Step 4: Simplify right side
    71,218,135.20x = 7,063,019,559,409,164
  5. Step 5: Solve for x
    x = 7,063,019,559,409,164/71,218,135.20
  6. Step 6: Final answer
    x = 99,174,452.40

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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.