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Finding the Fourth Proportional to 136,316.80, 204,475.20 and 37,820.80

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Solution

The fourth proportional to 136,316.80, 204,475.20 and 37,820.80 is: 56,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,316.80 : 204,475.20 = 37,820.80 : x
  2. Step 2: Convert to fraction form
    136,316.80/204,475.20 = 37,820.80/x
  3. Step 3: Cross multiply
    136,316.80x = 204,475.20 × 37,820.80
  4. Step 4: Simplify right side
    136,316.80x = 7,733,415,644.16
  5. Step 5: Solve for x
    x = 7,733,415,644.16/136,316.80
  6. Step 6: Final answer
    x = 56,731.20

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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.