Home / 129,158.64-193,377.06-69,781.56

Finding the Fourth Proportional to 129,158.64, 193,377.06 and 69,781.56

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Solution

The fourth proportional to 129,158.64, 193,377.06 and 69,781.56 is: 104,477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,158.64 : 193,377.06 = 69,781.56 : x
  2. Step 2: Convert to fraction form
    129,158.64/193,377.06 = 69,781.56/x
  3. Step 3: Cross multiply
    129,158.64x = 193,377.06 × 69,781.56
  4. Step 4: Simplify right side
    129,158.64x = 13,494,152,915.01
  5. Step 5: Solve for x
    x = 13,494,152,915.01/129,158.64
  6. Step 6: Final answer
    x = 104,477.35

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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.