Home / 128,781.98-193,172.06-40,035.36

Finding the Fourth Proportional to 128,781.98, 193,172.06 and 40,035.36

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Solution

The fourth proportional to 128,781.98, 193,172.06 and 40,035.36 is: 60,052.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,781.98 : 193,172.06 = 40,035.36 : x
  2. Step 2: Convert to fraction form
    128,781.98/193,172.06 = 40,035.36/x
  3. Step 3: Cross multiply
    128,781.98x = 193,172.06 × 40,035.36
  4. Step 4: Simplify right side
    128,781.98x = 7,733,712,964.04
  5. Step 5: Solve for x
    x = 7,733,712,964.04/128,781.98
  6. Step 6: Final answer
    x = 60,052.76

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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.