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Finding the Fourth Proportional to 157,287.53, 235,944.66 and 138,785.51

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Solution

The fourth proportional to 157,287.53, 235,944.66 and 138,785.51 is: 208,190.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,287.53 : 235,944.66 = 138,785.51 : x
  2. Step 2: Convert to fraction form
    157,287.53/235,944.66 = 138,785.51/x
  3. Step 3: Cross multiply
    157,287.53x = 235,944.66 × 138,785.51
  4. Step 4: Simplify right side
    157,287.53x = 32,745,699,969.88
  5. Step 5: Solve for x
    x = 32,745,699,969.88/157,287.53
  6. Step 6: Final answer
    x = 208,190.06

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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.