Home / 128,057,425.47-192,085,495.77-31,013,130.45

Finding the Fourth Proportional to 128,057,425.47, 192,085,495.77 and 31,013,130.45

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Solution

The fourth proportional to 128,057,425.47, 192,085,495.77 and 31,013,130.45 is: 46,519,540.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,057,425.47 : 192,085,495.77 = 31,013,130.45 : x
  2. Step 2: Convert to fraction form
    128,057,425.47/192,085,495.77 = 31,013,130.45/x
  3. Step 3: Cross multiply
    128,057,425.47x = 192,085,495.77 × 31,013,130.45
  4. Step 4: Simplify right side
    128,057,425.47x = 5,957,172,538,704,553
  5. Step 5: Solve for x
    x = 5,957,172,538,704,553/128,057,425.47
  6. Step 6: Final answer
    x = 46,519,540.10

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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.