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Finding the Fourth Proportional to 100,235.68, 150,168.24 and 86,938.72

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Solution

The fourth proportional to 100,235.68, 150,168.24 and 86,938.72 is: 130,247.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,235.68 : 150,168.24 = 86,938.72 : x
  2. Step 2: Convert to fraction form
    100,235.68/150,168.24 = 86,938.72/x
  3. Step 3: Cross multiply
    100,235.68x = 150,168.24 × 86,938.72
  4. Step 4: Simplify right side
    100,235.68x = 13,055,434,570.25
  5. Step 5: Solve for x
    x = 13,055,434,570.25/100,235.68
  6. Step 6: Final answer
    x = 130,247.38

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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.