Home / 100,274.07-138,378.23-59,989.53

Finding the Fourth Proportional to 100,274.07, 138,378.23 and 59,989.53

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Solution

The fourth proportional to 100,274.07, 138,378.23 and 59,989.53 is: 82,785.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,274.07 : 138,378.23 = 59,989.53 : x
  2. Step 2: Convert to fraction form
    100,274.07/138,378.23 = 59,989.53/x
  3. Step 3: Cross multiply
    100,274.07x = 138,378.23 × 59,989.53
  4. Step 4: Simplify right side
    100,274.07x = 8,301,244,679.98
  5. Step 5: Solve for x
    x = 8,301,244,679.98/100,274.07
  6. Step 6: Final answer
    x = 82,785.56

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1.5x scale

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.