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Finding the Fourth Proportional to 109,992,312, 164,987,417.52 and 66,873,420

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Solution

The fourth proportional to 109,992,312, 164,987,417.52 and 66,873,420 is: 100,309,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,992,312 : 164,987,417.52 = 66,873,420 : x
  2. Step 2: Convert to fraction form
    109,992,312/164,987,417.52 = 66,873,420/x
  3. Step 3: Cross multiply
    109,992,312x = 164,987,417.52 × 66,873,420
  4. Step 4: Simplify right side
    109,992,312x = 11,033,272,866,530,320
  5. Step 5: Solve for x
    x = 11,033,272,866,530,320/109,992,312
  6. Step 6: Final answer
    x = 100,309,491.33

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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.