Home / 144,292,742.66-199,118,649.12-78,211,821.89

Finding the Fourth Proportional to 144,292,742.66, 199,118,649.12 and 78,211,821.89

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Solution

The fourth proportional to 144,292,742.66, 199,118,649.12 and 78,211,821.89 is: 107,929,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,292,742.66 : 199,118,649.12 = 78,211,821.89 : x
  2. Step 2: Convert to fraction form
    144,292,742.66/199,118,649.12 = 78,211,821.89/x
  3. Step 3: Cross multiply
    144,292,742.66x = 199,118,649.12 × 78,211,821.89
  4. Step 4: Simplify right side
    144,292,742.66x = 15,573,432,319,950,846
  5. Step 5: Solve for x
    x = 15,573,432,319,950,846/144,292,742.66
  6. Step 6: Final answer
    x = 107,929,422.04

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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.