Home / 118,885.86-178,329.47-30,139.56

Finding the Fourth Proportional to 118,885.86, 178,329.47 and 30,139.56

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Solution

The fourth proportional to 118,885.86, 178,329.47 and 30,139.56 is: 45,209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,885.86 : 178,329.47 = 30,139.56 : x
  2. Step 2: Convert to fraction form
    118,885.86/178,329.47 = 30,139.56/x
  3. Step 3: Cross multiply
    118,885.86x = 178,329.47 × 30,139.56
  4. Step 4: Simplify right side
    118,885.86x = 5,374,771,610.14
  5. Step 5: Solve for x
    x = 5,374,771,610.14/118,885.86
  6. Step 6: Final answer
    x = 45,209.51

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1.5x scale

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.