Home / 100,607.25-138,838.01-58,168.52

Finding the Fourth Proportional to 100,607.25, 138,838.01 and 58,168.52

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Solution

The fourth proportional to 100,607.25, 138,838.01 and 58,168.52 is: 80,272.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,607.25 : 138,838.01 = 58,168.52 : x
  2. Step 2: Convert to fraction form
    100,607.25/138,838.01 = 58,168.52/x
  3. Step 3: Cross multiply
    100,607.25x = 138,838.01 × 58,168.52
  4. Step 4: Simplify right side
    100,607.25x = 8,076,001,561.45
  5. Step 5: Solve for x
    x = 8,076,001,561.45/100,607.25
  6. Step 6: Final answer
    x = 80,272.56

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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.