Home / 158,634.12-218,913.04-90,650.32

Finding the Fourth Proportional to 158,634.12, 218,913.04 and 90,650.32

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Solution

The fourth proportional to 158,634.12, 218,913.04 and 90,650.32 is: 125,096.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,634.12 : 218,913.04 = 90,650.32 : x
  2. Step 2: Convert to fraction form
    158,634.12/218,913.04 = 90,650.32/x
  3. Step 3: Cross multiply
    158,634.12x = 218,913.04 × 90,650.32
  4. Step 4: Simplify right side
    158,634.12x = 19,844,537,128.17
  5. Step 5: Solve for x
    x = 19,844,537,128.17/158,634.12
  6. Step 6: Final answer
    x = 125,096.27

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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.