Home / 129,231,518-193,848,965.04-42,969,924.86

Finding the Fourth Proportional to 129,231,518, 193,848,965.04 and 42,969,924.86

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Solution

The fourth proportional to 129,231,518, 193,848,965.04 and 42,969,924.86 is: 64,455,448.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,231,518 : 193,848,965.04 = 42,969,924.86 : x
  2. Step 2: Convert to fraction form
    129,231,518/193,848,965.04 = 42,969,924.86/x
  3. Step 3: Cross multiply
    129,231,518x = 193,848,965.04 × 42,969,924.86
  4. Step 4: Simplify right side
    129,231,518x = 8,329,675,461,957,566
  5. Step 5: Solve for x
    x = 8,329,675,461,957,566/129,231,518
  6. Step 6: Final answer
    x = 64,455,448.57

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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.