Home / 105,067,644.40-157,388,890.20-72,756,031.60

Finding the Fourth Proportional to 105,067,644.40, 157,388,890.20 and 72,756,031.60

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Solution

The fourth proportional to 105,067,644.40, 157,388,890.20 and 72,756,031.60 is: 108,986,844.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,067,644.40 : 157,388,890.20 = 72,756,031.60 : x
  2. Step 2: Convert to fraction form
    105,067,644.40/157,388,890.20 = 72,756,031.60/x
  3. Step 3: Cross multiply
    105,067,644.40x = 157,388,890.20 × 72,756,031.60
  4. Step 4: Simplify right side
    105,067,644.40x = 11,450,991,068,880,128
  5. Step 5: Solve for x
    x = 11,450,991,068,880,128/105,067,644.40
  6. Step 6: Final answer
    x = 108,986,844.94

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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.