Home / 100,113.28-138,142.69-59,818.52

Finding the Fourth Proportional to 100,113.28, 138,142.69 and 59,818.52

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Solution

The fourth proportional to 100,113.28, 138,142.69 and 59,818.52 is: 82,541.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,113.28 : 138,142.69 = 59,818.52 : x
  2. Step 2: Convert to fraction form
    100,113.28/138,142.69 = 59,818.52/x
  3. Step 3: Cross multiply
    100,113.28x = 138,142.69 × 59,818.52
  4. Step 4: Simplify right side
    100,113.28x = 8,263,491,460.43
  5. Step 5: Solve for x
    x = 8,263,491,460.43/100,113.28
  6. Step 6: Final answer
    x = 82,541.41

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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.