Home / 154,785.24-213,627.42-86,829.66

Finding the Fourth Proportional to 154,785.24, 213,627.42 and 86,829.66

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Solution

The fourth proportional to 154,785.24, 213,627.42 and 86,829.66 is: 119,838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,785.24 : 213,627.42 = 86,829.66 : x
  2. Step 2: Convert to fraction form
    154,785.24/213,627.42 = 86,829.66/x
  3. Step 3: Cross multiply
    154,785.24x = 213,627.42 × 86,829.66
  4. Step 4: Simplify right side
    154,785.24x = 18,549,196,245.28
  5. Step 5: Solve for x
    x = 18,549,196,245.28/154,785.24
  6. Step 6: Final answer
    x = 119,838.28

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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.