Home / 85,211,320.20-127,816,980.30-71,606,430.60

Finding the Fourth Proportional to 85,211,320.20, 127,816,980.30 and 71,606,430.60

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Solution

The fourth proportional to 85,211,320.20, 127,816,980.30 and 71,606,430.60 is: 107,409,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,211,320.20 : 127,816,980.30 = 71,606,430.60 : x
  2. Step 2: Convert to fraction form
    85,211,320.20/127,816,980.30 = 71,606,430.60/x
  3. Step 3: Cross multiply
    85,211,320.20x = 127,816,980.30 × 71,606,430.60
  4. Step 4: Simplify right side
    85,211,320.20x = 9,152,517,729,353,516
  5. Step 5: Solve for x
    x = 9,152,517,729,353,516/85,211,320.20
  6. Step 6: Final answer
    x = 107,409,645.90

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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.