Home / 154,821.02-213,661.46-86,859.52

Finding the Fourth Proportional to 154,821.02, 213,661.46 and 86,859.52

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Solution

The fourth proportional to 154,821.02, 213,661.46 and 86,859.52 is: 119,870.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,821.02 : 213,661.46 = 86,859.52 : x
  2. Step 2: Convert to fraction form
    154,821.02/213,661.46 = 86,859.52/x
  3. Step 3: Cross multiply
    154,821.02x = 213,661.46 × 86,859.52
  4. Step 4: Simplify right side
    154,821.02x = 18,558,531,858.10
  5. Step 5: Solve for x
    x = 18,558,531,858.10/154,821.02
  6. Step 6: Final answer
    x = 119,870.88

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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.