Home / 136,891,140-188,909,773.20-78,944,388

Finding the Fourth Proportional to 136,891,140, 188,909,773.20 and 78,944,388

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Solution

The fourth proportional to 136,891,140, 188,909,773.20 and 78,944,388 is: 108,943,255.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,891,140 : 188,909,773.20 = 78,944,388 : x
  2. Step 2: Convert to fraction form
    136,891,140/188,909,773.20 = 78,944,388/x
  3. Step 3: Cross multiply
    136,891,140x = 188,909,773.20 × 78,944,388
  4. Step 4: Simplify right side
    136,891,140x = 14,913,366,432,492,800
  5. Step 5: Solve for x
    x = 14,913,366,432,492,800/136,891,140
  6. Step 6: Final answer
    x = 108,943,255.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.