Home / 128,013,051.78-191,941,820.64-50,196,730.73

Finding the Fourth Proportional to 128,013,051.78, 191,941,820.64 and 50,196,730.73

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Solution

The fourth proportional to 128,013,051.78, 191,941,820.64 and 50,196,730.73 is: 75,264,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,013,051.78 : 191,941,820.64 = 50,196,730.73 : x
  2. Step 2: Convert to fraction form
    128,013,051.78/191,941,820.64 = 50,196,730.73/x
  3. Step 3: Cross multiply
    128,013,051.78x = 191,941,820.64 × 50,196,730.73
  4. Step 4: Simplify right side
    128,013,051.78x = 9,634,851,885,532,326
  5. Step 5: Solve for x
    x = 9,634,851,885,532,326/128,013,051.78
  6. Step 6: Final answer
    x = 75,264,605.85

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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.