Home / 128,008,310.40-191,863,166.40-51,293,404.80

Finding the Fourth Proportional to 128,008,310.40, 191,863,166.40 and 51,293,404.80

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Solution

The fourth proportional to 128,008,310.40, 191,863,166.40 and 51,293,404.80 is: 76,880,282.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,008,310.40 : 191,863,166.40 = 51,293,404.80 : x
  2. Step 2: Convert to fraction form
    128,008,310.40/191,863,166.40 = 51,293,404.80/x
  3. Step 3: Cross multiply
    128,008,310.40x = 191,863,166.40 × 51,293,404.80
  4. Step 4: Simplify right side
    128,008,310.40x = 9,841,315,060,364,958
  5. Step 5: Solve for x
    x = 9,841,315,060,364,958/128,008,310.40
  6. Step 6: Final answer
    x = 76,880,282.46

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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.