Home / 158,403.20-218,421.29-100,951.58

Finding the Fourth Proportional to 158,403.20, 218,421.29 and 100,951.58

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Solution

The fourth proportional to 158,403.20, 218,421.29 and 100,951.58 is: 139,201.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,403.20 : 218,421.29 = 100,951.58 : x
  2. Step 2: Convert to fraction form
    158,403.20/218,421.29 = 100,951.58/x
  3. Step 3: Cross multiply
    158,403.20x = 218,421.29 × 100,951.58
  4. Step 4: Simplify right side
    158,403.20x = 22,049,975,129.57
  5. Step 5: Solve for x
    x = 22,049,975,129.57/158,403.20
  6. Step 6: Final answer
    x = 139,201.58

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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.