Home / 129,157.28-193,737.36-40,407.20

Finding the Fourth Proportional to 129,157.28, 193,737.36 and 40,407.20

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Solution

The fourth proportional to 129,157.28, 193,737.36 and 40,407.20 is: 60,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,157.28 : 193,737.36 = 40,407.20 : x
  2. Step 2: Convert to fraction form
    129,157.28/193,737.36 = 40,407.20/x
  3. Step 3: Cross multiply
    129,157.28x = 193,737.36 × 40,407.20
  4. Step 4: Simplify right side
    129,157.28x = 7,828,384,252.99
  5. Step 5: Solve for x
    x = 7,828,384,252.99/129,157.28
  6. Step 6: Final answer
    x = 60,611.25

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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.