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Finding the Fourth Proportional to 139,802,402.80, 209,628,954.60 and 58,932,002.80

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Solution

The fourth proportional to 139,802,402.80, 209,628,954.60 and 58,932,002.80 is: 88,366,536.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,802,402.80 : 209,628,954.60 = 58,932,002.80 : x
  2. Step 2: Convert to fraction form
    139,802,402.80/209,628,954.60 = 58,932,002.80/x
  3. Step 3: Cross multiply
    139,802,402.80x = 209,628,954.60 × 58,932,002.80
  4. Step 4: Simplify right side
    139,802,402.80x = 12,353,854,139,448,272
  5. Step 5: Solve for x
    x = 12,353,854,139,448,272/139,802,402.80
  6. Step 6: Final answer
    x = 88,366,536.57

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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.