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Finding the Fourth Proportional to 150,718.32, 225,917.71 and 70,688.70

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Solution

The fourth proportional to 150,718.32, 225,917.71 and 70,688.70 is: 105,958.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,718.32 : 225,917.71 = 70,688.70 : x
  2. Step 2: Convert to fraction form
    150,718.32/225,917.71 = 70,688.70/x
  3. Step 3: Cross multiply
    150,718.32x = 225,917.71 × 70,688.70
  4. Step 4: Simplify right side
    150,718.32x = 15,969,829,050.16
  5. Step 5: Solve for x
    x = 15,969,829,050.16/150,718.32
  6. Step 6: Final answer
    x = 105,958.11

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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.