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Finding the Fourth Proportional to 101,516.70, 152,145.45 and 78,026.70

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Solution

The fourth proportional to 101,516.70, 152,145.45 and 78,026.70 is: 116,940.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,516.70 : 152,145.45 = 78,026.70 : x
  2. Step 2: Convert to fraction form
    101,516.70/152,145.45 = 78,026.70/x
  3. Step 3: Cross multiply
    101,516.70x = 152,145.45 × 78,026.70
  4. Step 4: Simplify right side
    101,516.70x = 11,871,407,383.52
  5. Step 5: Solve for x
    x = 11,871,407,383.52/101,516.70
  6. Step 6: Final answer
    x = 116,940.44

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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.