Home / 172,139.11-258,208.47-59,819.34

Finding the Fourth Proportional to 172,139.11, 258,208.47 and 59,819.34

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Solution

The fourth proportional to 172,139.11, 258,208.47 and 59,819.34 is: 89,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,139.11 : 258,208.47 = 59,819.34 : x
  2. Step 2: Convert to fraction form
    172,139.11/258,208.47 = 59,819.34/x
  3. Step 3: Cross multiply
    172,139.11x = 258,208.47 × 59,819.34
  4. Step 4: Simplify right side
    172,139.11x = 15,445,859,759.29
  5. Step 5: Solve for x
    x = 15,445,859,759.29/172,139.11
  6. Step 6: Final answer
    x = 89,728.94

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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.