Home / 103,375.28-142,712.08-69,561.56

Finding the Fourth Proportional to 103,375.28, 142,712.08 and 69,561.56

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Solution

The fourth proportional to 103,375.28, 142,712.08 and 69,561.56 is: 96,031.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,375.28 : 142,712.08 = 69,561.56 : x
  2. Step 2: Convert to fraction form
    103,375.28/142,712.08 = 69,561.56/x
  3. Step 3: Cross multiply
    103,375.28x = 142,712.08 × 69,561.56
  4. Step 4: Simplify right side
    103,375.28x = 9,927,274,915.64
  5. Step 5: Solve for x
    x = 9,927,274,915.64/103,375.28
  6. Step 6: Final answer
    x = 96,031.42

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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.