Home / 154,091.99-212,642.85-86,109.52

Finding the Fourth Proportional to 154,091.99, 212,642.85 and 86,109.52

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Solution

The fourth proportional to 154,091.99, 212,642.85 and 86,109.52 is: 118,828.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,091.99 : 212,642.85 = 86,109.52 : x
  2. Step 2: Convert to fraction form
    154,091.99/212,642.85 = 86,109.52/x
  3. Step 3: Cross multiply
    154,091.99x = 212,642.85 × 86,109.52
  4. Step 4: Simplify right side
    154,091.99x = 18,310,573,744.93
  5. Step 5: Solve for x
    x = 18,310,573,744.93/154,091.99
  6. Step 6: Final answer
    x = 118,828.85

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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.