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Finding the Fourth Proportional to 115,152.42, 172,734.81 and 36,272.82

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Solution

The fourth proportional to 115,152.42, 172,734.81 and 36,272.82 is: 54,411.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,152.42 : 172,734.81 = 36,272.82 : x
  2. Step 2: Convert to fraction form
    115,152.42/172,734.81 = 36,272.82/x
  3. Step 3: Cross multiply
    115,152.42x = 172,734.81 × 36,272.82
  4. Step 4: Simplify right side
    115,152.42x = 6,265,578,670.86
  5. Step 5: Solve for x
    x = 6,265,578,670.86/115,152.42
  6. Step 6: Final answer
    x = 54,411.18

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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.