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Finding the Fourth Proportional to 138,059.84, 207,090.04 and 38,220.32

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Solution

The fourth proportional to 138,059.84, 207,090.04 and 38,220.32 is: 57,330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,059.84 : 207,090.04 = 38,220.32 : x
  2. Step 2: Convert to fraction form
    138,059.84/207,090.04 = 38,220.32/x
  3. Step 3: Cross multiply
    138,059.84x = 207,090.04 × 38,220.32
  4. Step 4: Simplify right side
    138,059.84x = 7,915,047,597.61
  5. Step 5: Solve for x
    x = 7,915,047,597.61/138,059.84
  6. Step 6: Final answer
    x = 57,330.56

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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.