Home / 78,199.86-116,727.51-67,177.38

Finding the Fourth Proportional to 78,199.86, 116,727.51 and 67,177.38

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Solution

The fourth proportional to 78,199.86, 116,727.51 and 67,177.38 is: 100,274.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,199.86 : 116,727.51 = 67,177.38 : x
  2. Step 2: Convert to fraction form
    78,199.86/116,727.51 = 67,177.38/x
  3. Step 3: Cross multiply
    78,199.86x = 116,727.51 × 67,177.38
  4. Step 4: Simplify right side
    78,199.86x = 7,841,448,985.37
  5. Step 5: Solve for x
    x = 7,841,448,985.37/78,199.86
  6. Step 6: Final answer
    x = 100,274.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.