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Finding the Fourth Proportional to 137,796,197.20, 206,788,774.20 and 61,174,214.80

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Solution

The fourth proportional to 137,796,197.20, 206,788,774.20 and 61,174,214.80 is: 91,803,265.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,796,197.20 : 206,788,774.20 = 61,174,214.80 : x
  2. Step 2: Convert to fraction form
    137,796,197.20/206,788,774.20 = 61,174,214.80/x
  3. Step 3: Cross multiply
    137,796,197.20x = 206,788,774.20 × 61,174,214.80
  4. Step 4: Simplify right side
    137,796,197.20x = 12,650,140,891,139,496
  5. Step 5: Solve for x
    x = 12,650,140,891,139,496/137,796,197.20
  6. Step 6: Final answer
    x = 91,803,265.61

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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.