Home / 158,139.48-218,303.82-100,855.74

Finding the Fourth Proportional to 158,139.48, 218,303.82 and 100,855.74

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Solution

The fourth proportional to 158,139.48, 218,303.82 and 100,855.74 is: 139,226.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,139.48 : 218,303.82 = 100,855.74 : x
  2. Step 2: Convert to fraction form
    158,139.48/218,303.82 = 100,855.74/x
  3. Step 3: Cross multiply
    158,139.48x = 218,303.82 × 100,855.74
  4. Step 4: Simplify right side
    158,139.48x = 22,017,193,310.93
  5. Step 5: Solve for x
    x = 22,017,193,310.93/158,139.48
  6. Step 6: Final answer
    x = 139,226.42

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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.