Home / 154,659.93-213,420.60-90,985.43

Finding the Fourth Proportional to 154,659.93, 213,420.60 and 90,985.43

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Solution

The fourth proportional to 154,659.93, 213,420.60 and 90,985.43 is: 125,553.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,659.93 : 213,420.60 = 90,985.43 : x
  2. Step 2: Convert to fraction form
    154,659.93/213,420.60 = 90,985.43/x
  3. Step 3: Cross multiply
    154,659.93x = 213,420.60 × 90,985.43
  4. Step 4: Simplify right side
    154,659.93x = 19,418,163,994.76
  5. Step 5: Solve for x
    x = 19,418,163,994.76/154,659.93
  6. Step 6: Final answer
    x = 125,553.94

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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.