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Finding the Fourth Proportional to 159,712.51, 220,200.90 and 105,256.21

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Solution

The fourth proportional to 159,712.51, 220,200.90 and 105,256.21 is: 145,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,712.51 : 220,200.90 = 105,256.21 : x
  2. Step 2: Convert to fraction form
    159,712.51/220,200.90 = 105,256.21/x
  3. Step 3: Cross multiply
    159,712.51x = 220,200.90 × 105,256.21
  4. Step 4: Simplify right side
    159,712.51x = 23,177,512,172.59
  5. Step 5: Solve for x
    x = 23,177,512,172.59/159,712.51
  6. Step 6: Final answer
    x = 145,120.20

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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.