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Finding the Fourth Proportional to 110,992.88, 153,118.25 and 72,742.25

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Solution

The fourth proportional to 110,992.88, 153,118.25 and 72,742.25 is: 100,350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,992.88 : 153,118.25 = 72,742.25 : x
  2. Step 2: Convert to fraction form
    110,992.88/153,118.25 = 72,742.25/x
  3. Step 3: Cross multiply
    110,992.88x = 153,118.25 × 72,742.25
  4. Step 4: Simplify right side
    110,992.88x = 11,138,166,312.93
  5. Step 5: Solve for x
    x = 11,138,166,312.93/110,992.88
  6. Step 6: Final answer
    x = 100,350.28

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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.