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Finding the Fourth Proportional to 172,981.96, 259,483.88 and 73,129.01

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Solution

The fourth proportional to 172,981.96, 259,483.88 and 73,129.01 is: 109,698.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,981.96 : 259,483.88 = 73,129.01 : x
  2. Step 2: Convert to fraction form
    172,981.96/259,483.88 = 73,129.01/x
  3. Step 3: Cross multiply
    172,981.96x = 259,483.88 × 73,129.01
  4. Step 4: Simplify right side
    172,981.96x = 18,975,798,140.76
  5. Step 5: Solve for x
    x = 18,975,798,140.76/172,981.96
  6. Step 6: Final answer
    x = 109,698.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.