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Finding the Fourth Proportional to 124,790.63, 172,211.06 and 68,202

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Solution

The fourth proportional to 124,790.63, 172,211.06 and 68,202 is: 94,118.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,790.63 : 172,211.06 = 68,202 : x
  2. Step 2: Convert to fraction form
    124,790.63/172,211.06 = 68,202/x
  3. Step 3: Cross multiply
    124,790.63x = 172,211.06 × 68,202
  4. Step 4: Simplify right side
    124,790.63x = 11,745,138,373.11
  5. Step 5: Solve for x
    x = 11,745,138,373.11/124,790.63
  6. Step 6: Final answer
    x = 94,118.76

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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.