Home / 105,128.20-145,090.81-59,797.43

Finding the Fourth Proportional to 105,128.20, 145,090.81 and 59,797.43

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Solution

The fourth proportional to 105,128.20, 145,090.81 and 59,797.43 is: 82,528.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,128.20 : 145,090.81 = 59,797.43 : x
  2. Step 2: Convert to fraction form
    105,128.20/145,090.81 = 59,797.43/x
  3. Step 3: Cross multiply
    105,128.20x = 145,090.81 × 59,797.43
  4. Step 4: Simplify right side
    105,128.20x = 8,676,057,554.62
  5. Step 5: Solve for x
    x = 8,676,057,554.62/105,128.20
  6. Step 6: Final answer
    x = 82,528.36

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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.