Home / 154,660.43-213,421.29-90,985.93

Finding the Fourth Proportional to 154,660.43, 213,421.29 and 90,985.93

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Solution

The fourth proportional to 154,660.43, 213,421.29 and 90,985.93 is: 125,554.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,660.43 : 213,421.29 = 90,985.93 : x
  2. Step 2: Convert to fraction form
    154,660.43/213,421.29 = 90,985.93/x
  3. Step 3: Cross multiply
    154,660.43x = 213,421.29 × 90,985.93
  4. Step 4: Simplify right side
    154,660.43x = 19,418,334,552.45
  5. Step 5: Solve for x
    x = 19,418,334,552.45/154,660.43
  6. Step 6: Final answer
    x = 125,554.64

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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.