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Finding the Fourth Proportional to 172,306.98, 258,460.70 and 83,573.56

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Solution

The fourth proportional to 172,306.98, 258,460.70 and 83,573.56 is: 125,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,306.98 : 258,460.70 = 83,573.56 : x
  2. Step 2: Convert to fraction form
    172,306.98/258,460.70 = 83,573.56/x
  3. Step 3: Cross multiply
    172,306.98x = 258,460.70 × 83,573.56
  4. Step 4: Simplify right side
    172,306.98x = 21,600,480,819.09
  5. Step 5: Solve for x
    x = 21,600,480,819.09/172,306.98
  6. Step 6: Final answer
    x = 125,360.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.