Home / 100,679,298.42-138,858,712.44-65,408,470.50

Finding the Fourth Proportional to 100,679,298.42, 138,858,712.44 and 65,408,470.50

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Solution

The fourth proportional to 100,679,298.42, 138,858,712.44 and 65,408,470.50 is: 90,212,547.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,679,298.42 : 138,858,712.44 = 65,408,470.50 : x
  2. Step 2: Convert to fraction form
    100,679,298.42/138,858,712.44 = 65,408,470.50/x
  3. Step 3: Cross multiply
    100,679,298.42x = 138,858,712.44 × 65,408,470.50
  4. Step 4: Simplify right side
    100,679,298.42x = 9,082,535,996,299,722
  5. Step 5: Solve for x
    x = 9,082,535,996,299,722/100,679,298.42
  6. Step 6: Final answer
    x = 90,212,547.55

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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.