Home / 123,395.18-170,285.40-66,806.54

Finding the Fourth Proportional to 123,395.18, 170,285.40 and 66,806.54

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Solution

The fourth proportional to 123,395.18, 170,285.40 and 66,806.54 is: 92,193.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.18 : 170,285.40 = 66,806.54 : x
  2. Step 2: Convert to fraction form
    123,395.18/170,285.40 = 66,806.54/x
  3. Step 3: Cross multiply
    123,395.18x = 170,285.40 × 66,806.54
  4. Step 4: Simplify right side
    123,395.18x = 11,376,178,386.52
  5. Step 5: Solve for x
    x = 11,376,178,386.52/123,395.18
  6. Step 6: Final answer
    x = 92,193.05

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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.