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Finding the Fourth Proportional to 109,888.29, 164,967 and 72,479.64

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Solution

The fourth proportional to 109,888.29, 164,967 and 72,479.64 is: 108,808.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,888.29 : 164,967 = 72,479.64 : x
  2. Step 2: Convert to fraction form
    109,888.29/164,967 = 72,479.64/x
  3. Step 3: Cross multiply
    109,888.29x = 164,967 × 72,479.64
  4. Step 4: Simplify right side
    109,888.29x = 11,956,748,771.88
  5. Step 5: Solve for x
    x = 11,956,748,771.88/109,888.29
  6. Step 6: Final answer
    x = 108,808.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.