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Finding the Fourth Proportional to 147,203.40, 203,072.76 and 86,732.76

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Solution

The fourth proportional to 147,203.40, 203,072.76 and 86,732.76 is: 119,651.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,203.40 : 203,072.76 = 86,732.76 : x
  2. Step 2: Convert to fraction form
    147,203.40/203,072.76 = 86,732.76/x
  3. Step 3: Cross multiply
    147,203.40x = 203,072.76 × 86,732.76
  4. Step 4: Simplify right side
    147,203.40x = 17,613,060,955.62
  5. Step 5: Solve for x
    x = 17,613,060,955.62/147,203.40
  6. Step 6: Final answer
    x = 119,651.18

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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.