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Finding the Fourth Proportional to 100,122.94, 137,433.53 and 88,538.59

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Solution

The fourth proportional to 100,122.94, 137,433.53 and 88,538.59 is: 121,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,122.94 : 137,433.53 = 88,538.59 : x
  2. Step 2: Convert to fraction form
    100,122.94/137,433.53 = 88,538.59/x
  3. Step 3: Cross multiply
    100,122.94x = 137,433.53 × 88,538.59
  4. Step 4: Simplify right side
    100,122.94x = 12,168,170,964.92
  5. Step 5: Solve for x
    x = 12,168,170,964.92/100,122.94
  6. Step 6: Final answer
    x = 121,532.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.