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Finding the Fourth Proportional to 115,119.61, 172,670.99 and 36,256.39

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Solution

The fourth proportional to 115,119.61, 172,670.99 and 36,256.39 is: 54,381.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,119.61 : 172,670.99 = 36,256.39 : x
  2. Step 2: Convert to fraction form
    115,119.61/172,670.99 = 36,256.39/x
  3. Step 3: Cross multiply
    115,119.61x = 172,670.99 × 36,256.39
  4. Step 4: Simplify right side
    115,119.61x = 6,260,426,142.17
  5. Step 5: Solve for x
    x = 6,260,426,142.17/115,119.61
  6. Step 6: Final answer
    x = 54,381.93

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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.