Home / 147,638.15-203,747.27-83,129.56

Finding the Fourth Proportional to 147,638.15, 203,747.27 and 83,129.56

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Solution

The fourth proportional to 147,638.15, 203,747.27 and 83,129.56 is: 114,722.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,638.15 : 203,747.27 = 83,129.56 : x
  2. Step 2: Convert to fraction form
    147,638.15/203,747.27 = 83,129.56/x
  3. Step 3: Cross multiply
    147,638.15x = 203,747.27 × 83,129.56
  4. Step 4: Simplify right side
    147,638.15x = 16,937,421,127.36
  5. Step 5: Solve for x
    x = 16,937,421,127.36/147,638.15
  6. Step 6: Final answer
    x = 114,722.52

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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.