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Finding the Fourth Proportional to 147,488.82, 203,534.55 and 80,420.82

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Solution

The fourth proportional to 147,488.82, 203,534.55 and 80,420.82 is: 110,980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,488.82 : 203,534.55 = 80,420.82 : x
  2. Step 2: Convert to fraction form
    147,488.82/203,534.55 = 80,420.82/x
  3. Step 3: Cross multiply
    147,488.82x = 203,534.55 × 80,420.82
  4. Step 4: Simplify right side
    147,488.82x = 16,368,415,409.33
  5. Step 5: Solve for x
    x = 16,368,415,409.33/147,488.82
  6. Step 6: Final answer
    x = 110,980.72

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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.