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Finding the Fourth Proportional to 100,070.42, 138,096.65 and 54,747.59

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Solution

The fourth proportional to 100,070.42, 138,096.65 and 54,747.59 is: 75,551.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,070.42 : 138,096.65 = 54,747.59 : x
  2. Step 2: Convert to fraction form
    100,070.42/138,096.65 = 54,747.59/x
  3. Step 3: Cross multiply
    100,070.42x = 138,096.65 × 54,747.59
  4. Step 4: Simplify right side
    100,070.42x = 7,560,457,810.35
  5. Step 5: Solve for x
    x = 7,560,457,810.35/100,070.42
  6. Step 6: Final answer
    x = 75,551.38

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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.