Home / 128,457,244.40-192,629,879.40-51,754,780.40

Finding the Fourth Proportional to 128,457,244.40, 192,629,879.40 and 51,754,780.40

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Solution

The fourth proportional to 128,457,244.40, 192,629,879.40 and 51,754,780.40 is: 77,609,613.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,457,244.40 : 192,629,879.40 = 51,754,780.40 : x
  2. Step 2: Convert to fraction form
    128,457,244.40/192,629,879.40 = 51,754,780.40/x
  3. Step 3: Cross multiply
    128,457,244.40x = 192,629,879.40 × 51,754,780.40
  4. Step 4: Simplify right side
    128,457,244.40x = 9,969,517,106,825,484
  5. Step 5: Solve for x
    x = 9,969,517,106,825,484/128,457,244.40
  6. Step 6: Final answer
    x = 77,609,613.64

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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.