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Finding the Fourth Proportional to 172,762.77, 258,711.21 and 109,391.76

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Solution

The fourth proportional to 172,762.77, 258,711.21 and 109,391.76 is: 163,813.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,762.77 : 258,711.21 = 109,391.76 : x
  2. Step 2: Convert to fraction form
    172,762.77/258,711.21 = 109,391.76/x
  3. Step 3: Cross multiply
    172,762.77x = 258,711.21 × 109,391.76
  4. Step 4: Simplify right side
    172,762.77x = 28,300,874,593.63
  5. Step 5: Solve for x
    x = 28,300,874,593.63/172,762.77
  6. Step 6: Final answer
    x = 163,813.50

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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.