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Finding the Fourth Proportional to 134,442, 185,534.28 and 74,009.52

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Solution

The fourth proportional to 134,442, 185,534.28 and 74,009.52 is: 102,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,442 : 185,534.28 = 74,009.52 : x
  2. Step 2: Convert to fraction form
    134,442/185,534.28 = 74,009.52/x
  3. Step 3: Cross multiply
    134,442x = 185,534.28 × 74,009.52
  4. Step 4: Simplify right side
    134,442x = 13,731,303,006.35
  5. Step 5: Solve for x
    x = 13,731,303,006.35/134,442
  6. Step 6: Final answer
    x = 102,135.52

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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.