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Finding the Fourth Proportional to 172,937.78, 238,657.74 and 97,486.28

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Solution

The fourth proportional to 172,937.78, 238,657.74 and 97,486.28 is: 134,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,937.78 : 238,657.74 = 97,486.28 : x
  2. Step 2: Convert to fraction form
    172,937.78/238,657.74 = 97,486.28/x
  3. Step 3: Cross multiply
    172,937.78x = 238,657.74 × 97,486.28
  4. Step 4: Simplify right side
    172,937.78x = 23,265,855,265.81
  5. Step 5: Solve for x
    x = 23,265,855,265.81/172,937.78
  6. Step 6: Final answer
    x = 134,533.10

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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.