Home / 122,811,378.12-169,459,697.03-72,568,605.38

Finding the Fourth Proportional to 122,811,378.12, 169,459,697.03 and 72,568,605.38

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Solution

The fourth proportional to 122,811,378.12, 169,459,697.03 and 72,568,605.38 is: 100,132,854.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,811,378.12 : 169,459,697.03 = 72,568,605.38 : x
  2. Step 2: Convert to fraction form
    122,811,378.12/169,459,697.03 = 72,568,605.38/x
  3. Step 3: Cross multiply
    122,811,378.12x = 169,459,697.03 × 72,568,605.38
  4. Step 4: Simplify right side
    122,811,378.12x = 12,297,453,880,374,286
  5. Step 5: Solve for x
    x = 12,297,453,880,374,286/122,811,378.12
  6. Step 6: Final answer
    x = 100,132,854.70

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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.