Home / 103,426,364.20-155,139,546.30-72,815,362.60

Finding the Fourth Proportional to 103,426,364.20, 155,139,546.30 and 72,815,362.60

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Solution

The fourth proportional to 103,426,364.20, 155,139,546.30 and 72,815,362.60 is: 109,223,043.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,426,364.20 : 155,139,546.30 = 72,815,362.60 : x
  2. Step 2: Convert to fraction form
    103,426,364.20/155,139,546.30 = 72,815,362.60/x
  3. Step 3: Cross multiply
    103,426,364.20x = 155,139,546.30 × 72,815,362.60
  4. Step 4: Simplify right side
    103,426,364.20x = 11,296,542,317,433,988
  5. Step 5: Solve for x
    x = 11,296,542,317,433,988/103,426,364.20
  6. Step 6: Final answer
    x = 109,223,043.90

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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.