Home / 128,901.98-193,338.64-40,148.06

Finding the Fourth Proportional to 128,901.98, 193,338.64 and 40,148.06

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Solution

The fourth proportional to 128,901.98, 193,338.64 and 40,148.06 is: 60,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,901.98 : 193,338.64 = 40,148.06 : x
  2. Step 2: Convert to fraction form
    128,901.98/193,338.64 = 40,148.06/x
  3. Step 3: Cross multiply
    128,901.98x = 193,338.64 × 40,148.06
  4. Step 4: Simplify right side
    128,901.98x = 7,762,171,319.04
  5. Step 5: Solve for x
    x = 7,762,171,319.04/128,901.98
  6. Step 6: Final answer
    x = 60,217.63

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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.