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Finding the Fourth Proportional to 134,160, 185,145.12 and 74,544

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Solution

The fourth proportional to 134,160, 185,145.12 and 74,544 is: 102,873.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,160 : 185,145.12 = 74,544 : x
  2. Step 2: Convert to fraction form
    134,160/185,145.12 = 74,544/x
  3. Step 3: Cross multiply
    134,160x = 185,145.12 × 74,544
  4. Step 4: Simplify right side
    134,160x = 13,801,457,825.28
  5. Step 5: Solve for x
    x = 13,801,457,825.28/134,160
  6. Step 6: Final answer
    x = 102,873.12

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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.