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Finding the Fourth Proportional to 147,655.77, 203,780.26 and 90,333.28

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Solution

The fourth proportional to 147,655.77, 203,780.26 and 90,333.28 is: 124,669.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,655.77 : 203,780.26 = 90,333.28 : x
  2. Step 2: Convert to fraction form
    147,655.77/203,780.26 = 90,333.28/x
  3. Step 3: Cross multiply
    147,655.77x = 203,780.26 × 90,333.28
  4. Step 4: Simplify right side
    147,655.77x = 18,408,139,285.05
  5. Step 5: Solve for x
    x = 18,408,139,285.05/147,655.77
  6. Step 6: Final answer
    x = 124,669.29

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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.