Home / 100,484.64-138,670.54-55,166.84

Finding the Fourth Proportional to 100,484.64, 138,670.54 and 55,166.84

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Solution

The fourth proportional to 100,484.64, 138,670.54 and 55,166.84 is: 76,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,484.64 : 138,670.54 = 55,166.84 : x
  2. Step 2: Convert to fraction form
    100,484.64/138,670.54 = 55,166.84/x
  3. Step 3: Cross multiply
    100,484.64x = 138,670.54 × 55,166.84
  4. Step 4: Simplify right side
    100,484.64x = 7,650,015,492.89
  5. Step 5: Solve for x
    x = 7,650,015,492.89/100,484.64
  6. Step 6: Final answer
    x = 76,131.19

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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.