Home / 129,038.55-193,528.80-54,243.15

Finding the Fourth Proportional to 129,038.55, 193,528.80 and 54,243.15

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Solution

The fourth proportional to 129,038.55, 193,528.80 and 54,243.15 is: 81,352.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,038.55 : 193,528.80 = 54,243.15 : x
  2. Step 2: Convert to fraction form
    129,038.55/193,528.80 = 54,243.15/x
  3. Step 3: Cross multiply
    129,038.55x = 193,528.80 × 54,243.15
  4. Step 4: Simplify right side
    129,038.55x = 10,497,611,727.72
  5. Step 5: Solve for x
    x = 10,497,611,727.72/129,038.55
  6. Step 6: Final answer
    x = 81,352.52

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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.