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Finding the Fourth Proportional to 115,168.92, 172,363.20 and 70,823.76

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Solution

The fourth proportional to 115,168.92, 172,363.20 and 70,823.76 is: 105,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,168.92 : 172,363.20 = 70,823.76 : x
  2. Step 2: Convert to fraction form
    115,168.92/172,363.20 = 70,823.76/x
  3. Step 3: Cross multiply
    115,168.92x = 172,363.20 × 70,823.76
  4. Step 4: Simplify right side
    115,168.92x = 12,207,409,909.63
  5. Step 5: Solve for x
    x = 12,207,409,909.63/115,168.92
  6. Step 6: Final answer
    x = 105,995.70

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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.