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Finding the Fourth Proportional to 154,560.90, 213,302.06 and 86,573.90

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Solution

The fourth proportional to 154,560.90, 213,302.06 and 86,573.90 is: 119,476.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,560.90 : 213,302.06 = 86,573.90 : x
  2. Step 2: Convert to fraction form
    154,560.90/213,302.06 = 86,573.90/x
  3. Step 3: Cross multiply
    154,560.90x = 213,302.06 × 86,573.90
  4. Step 4: Simplify right side
    154,560.90x = 18,466,391,212.23
  5. Step 5: Solve for x
    x = 18,466,391,212.23/154,560.90
  6. Step 6: Final answer
    x = 119,476.47

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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.