Home / 154,629.47-213,388.56-86,646.98

Finding the Fourth Proportional to 154,629.47, 213,388.56 and 86,646.98

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Solution

The fourth proportional to 154,629.47, 213,388.56 and 86,646.98 is: 119,572.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,629.47 : 213,388.56 = 86,646.98 : x
  2. Step 2: Convert to fraction form
    154,629.47/213,388.56 = 86,646.98/x
  3. Step 3: Cross multiply
    154,629.47x = 213,388.56 × 86,646.98
  4. Step 4: Simplify right side
    154,629.47x = 18,489,474,824.02
  5. Step 5: Solve for x
    x = 18,489,474,824.02/154,629.47
  6. Step 6: Final answer
    x = 119,572.77

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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.