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Finding the Fourth Proportional to 172,980.36, 238,712.94 and 97,528.86

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Solution

The fourth proportional to 172,980.36, 238,712.94 and 97,528.86 is: 134,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,980.36 : 238,712.94 = 97,528.86 : x
  2. Step 2: Convert to fraction form
    172,980.36/238,712.94 = 97,528.86/x
  3. Step 3: Cross multiply
    172,980.36x = 238,712.94 × 97,528.86
  4. Step 4: Simplify right side
    172,980.36x = 23,281,400,905.45
  5. Step 5: Solve for x
    x = 23,281,400,905.45/172,980.36
  6. Step 6: Final answer
    x = 134,589.85

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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.