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Finding the Fourth Proportional to 145,592.71, 218,425.29 and 115,719.66

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Solution

The fourth proportional to 145,592.71, 218,425.29 and 115,719.66 is: 173,608.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,592.71 : 218,425.29 = 115,719.66 : x
  2. Step 2: Convert to fraction form
    145,592.71/218,425.29 = 115,719.66/x
  3. Step 3: Cross multiply
    145,592.71x = 218,425.29 × 115,719.66
  4. Step 4: Simplify right side
    145,592.71x = 25,276,099,959.92
  5. Step 5: Solve for x
    x = 25,276,099,959.92/145,592.71
  6. Step 6: Final answer
    x = 173,608.28

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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.