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Finding the Fourth Proportional to 115,183.46, 172,384.95 and 70,838.30

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Solution

The fourth proportional to 115,183.46, 172,384.95 and 70,838.30 is: 106,017.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,183.46 : 172,384.95 = 70,838.30 : x
  2. Step 2: Convert to fraction form
    115,183.46/172,384.95 = 70,838.30/x
  3. Step 3: Cross multiply
    115,183.46x = 172,384.95 × 70,838.30
  4. Step 4: Simplify right side
    115,183.46x = 12,211,456,803.59
  5. Step 5: Solve for x
    x = 12,211,456,803.59/115,183.46
  6. Step 6: Final answer
    x = 106,017.45

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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.