Home / 138,904.43-208,392.60-42,839.53

Finding the Fourth Proportional to 138,904.43, 208,392.60 and 42,839.53

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Solution

The fourth proportional to 138,904.43, 208,392.60 and 42,839.53 is: 64,270.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,904.43 : 208,392.60 = 42,839.53 : x
  2. Step 2: Convert to fraction form
    138,904.43/208,392.60 = 42,839.53/x
  3. Step 3: Cross multiply
    138,904.43x = 208,392.60 × 42,839.53
  4. Step 4: Simplify right side
    138,904.43x = 8,927,440,679.14
  5. Step 5: Solve for x
    x = 8,927,440,679.14/138,904.43
  6. Step 6: Final answer
    x = 64,270.38

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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.