Home / 128,897.76-193,323.60-82,011.36

Finding the Fourth Proportional to 128,897.76, 193,323.60 and 82,011.36

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Solution

The fourth proportional to 128,897.76, 193,323.60 and 82,011.36 is: 123,002.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,897.76 : 193,323.60 = 82,011.36 : x
  2. Step 2: Convert to fraction form
    128,897.76/193,323.60 = 82,011.36/x
  3. Step 3: Cross multiply
    128,897.76x = 193,323.60 × 82,011.36
  4. Step 4: Simplify right side
    128,897.76x = 15,854,731,356.10
  5. Step 5: Solve for x
    x = 15,854,731,356.10/128,897.76
  6. Step 6: Final answer
    x = 123,002.38

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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.