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Finding the Fourth Proportional to 120,088.02, 165,730.04 and 66,371.88

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Solution

The fourth proportional to 120,088.02, 165,730.04 and 66,371.88 is: 91,597.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,088.02 : 165,730.04 = 66,371.88 : x
  2. Step 2: Convert to fraction form
    120,088.02/165,730.04 = 66,371.88/x
  3. Step 3: Cross multiply
    120,088.02x = 165,730.04 × 66,371.88
  4. Step 4: Simplify right side
    120,088.02x = 10,999,814,327.28
  5. Step 5: Solve for x
    x = 10,999,814,327.28/120,088.02
  6. Step 6: Final answer
    x = 91,597.93

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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.