Home / 122,799,943.70-169,540,401.46-78,171,097.01

Finding the Fourth Proportional to 122,799,943.70, 169,540,401.46 and 78,171,097.01

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Solution

The fourth proportional to 122,799,943.70, 169,540,401.46 and 78,171,097.01 is: 107,924,798.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,799,943.70 : 169,540,401.46 = 78,171,097.01 : x
  2. Step 2: Convert to fraction form
    122,799,943.70/169,540,401.46 = 78,171,097.01/x
  3. Step 3: Cross multiply
    122,799,943.70x = 169,540,401.46 × 78,171,097.01
  4. Step 4: Simplify right side
    122,799,943.70x = 13,253,159,169,644,008
  5. Step 5: Solve for x
    x = 13,253,159,169,644,008/122,799,943.70
  6. Step 6: Final answer
    x = 107,924,798.42

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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.