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Finding the Fourth Proportional to 122,489.64, 183,760.68 and 42,530.10

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Solution

The fourth proportional to 122,489.64, 183,760.68 and 42,530.10 is: 63,804.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,489.64 : 183,760.68 = 42,530.10 : x
  2. Step 2: Convert to fraction form
    122,489.64/183,760.68 = 42,530.10/x
  3. Step 3: Cross multiply
    122,489.64x = 183,760.68 × 42,530.10
  4. Step 4: Simplify right side
    122,489.64x = 7,815,360,096.47
  5. Step 5: Solve for x
    x = 7,815,360,096.47/122,489.64
  6. Step 6: Final answer
    x = 63,804.25

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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.