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Finding the Fourth Proportional to 127,145.16, 175,494.60 and 79,369.74

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Solution

The fourth proportional to 127,145.16, 175,494.60 and 79,369.74 is: 109,551.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,145.16 : 175,494.60 = 79,369.74 : x
  2. Step 2: Convert to fraction form
    127,145.16/175,494.60 = 79,369.74/x
  3. Step 3: Cross multiply
    127,145.16x = 175,494.60 × 79,369.74
  4. Step 4: Simplify right side
    127,145.16x = 13,928,960,773.40
  5. Step 5: Solve for x
    x = 13,928,960,773.40/127,145.16
  6. Step 6: Final answer
    x = 109,551.64

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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.