Home / 138,931.84-191,726.23-75,269.64

Finding the Fourth Proportional to 138,931.84, 191,726.23 and 75,269.64

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Solution

The fourth proportional to 138,931.84, 191,726.23 and 75,269.64 is: 103,872.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,931.84 : 191,726.23 = 75,269.64 : x
  2. Step 2: Convert to fraction form
    138,931.84/191,726.23 = 75,269.64/x
  3. Step 3: Cross multiply
    138,931.84x = 191,726.23 × 75,269.64
  4. Step 4: Simplify right side
    138,931.84x = 14,431,164,310.66
  5. Step 5: Solve for x
    x = 14,431,164,310.66/138,931.84
  6. Step 6: Final answer
    x = 103,872.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.