Home / 142,056.09-211,919.81-138,194.82

Finding the Fourth Proportional to 142,056.09, 211,919.81 and 138,194.82

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Solution

The fourth proportional to 142,056.09, 211,919.81 and 138,194.82 is: 206,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,056.09 : 211,919.81 = 138,194.82 : x
  2. Step 2: Convert to fraction form
    142,056.09/211,919.81 = 138,194.82/x
  3. Step 3: Cross multiply
    142,056.09x = 211,919.81 × 138,194.82
  4. Step 4: Simplify right side
    142,056.09x = 29,286,218,937.79
  5. Step 5: Solve for x
    x = 29,286,218,937.79/142,056.09
  6. Step 6: Final answer
    x = 206,159.55

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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.