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Finding the Fourth Proportional to 125,611.02, 187,982.04 and 77,559.87

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Solution

The fourth proportional to 125,611.02, 187,982.04 and 77,559.87 is: 116,071.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,611.02 : 187,982.04 = 77,559.87 : x
  2. Step 2: Convert to fraction form
    125,611.02/187,982.04 = 77,559.87/x
  3. Step 3: Cross multiply
    125,611.02x = 187,982.04 × 77,559.87
  4. Step 4: Simplify right side
    125,611.02x = 14,579,862,584.73
  5. Step 5: Solve for x
    x = 14,579,862,584.73/125,611.02
  6. Step 6: Final answer
    x = 116,071.52

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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.