Home / 133,829.40-200,680.55-77,686.72

Finding the Fourth Proportional to 133,829.40, 200,680.55 and 77,686.72

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Solution

The fourth proportional to 133,829.40, 200,680.55 and 77,686.72 is: 116,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,829.40 : 200,680.55 = 77,686.72 : x
  2. Step 2: Convert to fraction form
    133,829.40/200,680.55 = 77,686.72/x
  3. Step 3: Cross multiply
    133,829.40x = 200,680.55 × 77,686.72
  4. Step 4: Simplify right side
    133,829.40x = 15,590,213,891.51
  5. Step 5: Solve for x
    x = 15,590,213,891.51/133,829.40
  6. Step 6: Final answer
    x = 116,493.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.