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Finding the Fourth Proportional to 172,931.26, 238,645.54 and 97,479.76

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Solution

The fourth proportional to 172,931.26, 238,645.54 and 97,479.76 is: 134,522.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,931.26 : 238,645.54 = 97,479.76 : x
  2. Step 2: Convert to fraction form
    172,931.26/238,645.54 = 97,479.76/x
  3. Step 3: Cross multiply
    172,931.26x = 238,645.54 × 97,479.76
  4. Step 4: Simplify right side
    172,931.26x = 23,263,109,964.27
  5. Step 5: Solve for x
    x = 23,263,109,964.27/172,931.26
  6. Step 6: Final answer
    x = 134,522.29

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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.