Home / 142,106.54-211,924.66-140,199.78

Finding the Fourth Proportional to 142,106.54, 211,924.66 and 140,199.78

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Solution

The fourth proportional to 142,106.54, 211,924.66 and 140,199.78 is: 209,081.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,106.54 : 211,924.66 = 140,199.78 : x
  2. Step 2: Convert to fraction form
    142,106.54/211,924.66 = 140,199.78/x
  3. Step 3: Cross multiply
    142,106.54x = 211,924.66 × 140,199.78
  4. Step 4: Simplify right side
    142,106.54x = 29,711,790,708.57
  5. Step 5: Solve for x
    x = 29,711,790,708.57/142,106.54
  6. Step 6: Final answer
    x = 209,081.09

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1.5x scale

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.