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Finding the Fourth Proportional to 150,381.72, 207,751.44 and 98,820.72

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Solution

The fourth proportional to 150,381.72, 207,751.44 and 98,820.72 is: 136,520.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,381.72 : 207,751.44 = 98,820.72 : x
  2. Step 2: Convert to fraction form
    150,381.72/207,751.44 = 98,820.72/x
  3. Step 3: Cross multiply
    150,381.72x = 207,751.44 × 98,820.72
  4. Step 4: Simplify right side
    150,381.72x = 20,530,146,881.84
  5. Step 5: Solve for x
    x = 20,530,146,881.84/150,381.72
  6. Step 6: Final answer
    x = 136,520.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.