Home / 107,920.86-148,983.66-83,668.20

Finding the Fourth Proportional to 107,920.86, 148,983.66 and 83,668.20

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Solution

The fourth proportional to 107,920.86, 148,983.66 and 83,668.20 is: 115,503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,920.86 : 148,983.66 = 83,668.20 : x
  2. Step 2: Convert to fraction form
    107,920.86/148,983.66 = 83,668.20/x
  3. Step 3: Cross multiply
    107,920.86x = 148,983.66 × 83,668.20
  4. Step 4: Simplify right side
    107,920.86x = 12,465,194,661.61
  5. Step 5: Solve for x
    x = 12,465,194,661.61/107,920.86
  6. Step 6: Final answer
    x = 115,503.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.