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Finding the Fourth Proportional to 171,501.35, 257,339.77 and 81,645.62

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Solution

The fourth proportional to 171,501.35, 257,339.77 and 81,645.62 is: 122,510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,501.35 : 257,339.77 = 81,645.62 : x
  2. Step 2: Convert to fraction form
    171,501.35/257,339.77 = 81,645.62/x
  3. Step 3: Cross multiply
    171,501.35x = 257,339.77 × 81,645.62
  4. Step 4: Simplify right side
    171,501.35x = 21,010,663,581.49
  5. Step 5: Solve for x
    x = 21,010,663,581.49/171,501.35
  6. Step 6: Final answer
    x = 122,510.20

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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.