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Finding the Fourth Proportional to 134,808, 202,261.22 and 78,637.64

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Solution

The fourth proportional to 134,808, 202,261.22 and 78,637.64 is: 117,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,808 : 202,261.22 = 78,637.64 : x
  2. Step 2: Convert to fraction form
    134,808/202,261.22 = 78,637.64/x
  3. Step 3: Cross multiply
    134,808x = 202,261.22 × 78,637.64
  4. Step 4: Simplify right side
    134,808x = 15,905,344,611.13
  5. Step 5: Solve for x
    x = 15,905,344,611.13/134,808
  6. Step 6: Final answer
    x = 117,985.17

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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.