Home / 103,040,019.80-154,560,029.70-72,806,931.80

Finding the Fourth Proportional to 103,040,019.80, 154,560,029.70 and 72,806,931.80

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Solution

The fourth proportional to 103,040,019.80, 154,560,029.70 and 72,806,931.80 is: 109,210,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040,019.80 : 154,560,029.70 = 72,806,931.80 : x
  2. Step 2: Convert to fraction form
    103,040,019.80/154,560,029.70 = 72,806,931.80/x
  3. Step 3: Cross multiply
    103,040,019.80x = 154,560,029.70 × 72,806,931.80
  4. Step 4: Simplify right side
    103,040,019.80x = 11,253,041,541,373,874
  5. Step 5: Solve for x
    x = 11,253,041,541,373,874/103,040,019.80
  6. Step 6: Final answer
    x = 109,210,397.70

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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.