Home / 142,489,398.82-213,872,309.26-68,765,061.74

Finding the Fourth Proportional to 142,489,398.82, 213,872,309.26 and 68,765,061.74

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Solution

The fourth proportional to 142,489,398.82, 213,872,309.26 and 68,765,061.74 is: 103,214,292.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,489,398.82 : 213,872,309.26 = 68,765,061.74 : x
  2. Step 2: Convert to fraction form
    142,489,398.82/213,872,309.26 = 68,765,061.74/x
  3. Step 3: Cross multiply
    142,489,398.82x = 213,872,309.26 × 68,765,061.74
  4. Step 4: Simplify right side
    142,489,398.82x = 14,706,942,550,740,272
  5. Step 5: Solve for x
    x = 14,706,942,550,740,272/142,489,398.82
  6. Step 6: Final answer
    x = 103,214,292.94

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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.