Home / 123,565.02-170,537.92-78,247.14

Finding the Fourth Proportional to 123,565.02, 170,537.92 and 78,247.14

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Solution

The fourth proportional to 123,565.02, 170,537.92 and 78,247.14 is: 107,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,565.02 : 170,537.92 = 78,247.14 : x
  2. Step 2: Convert to fraction form
    123,565.02/170,537.92 = 78,247.14/x
  3. Step 3: Cross multiply
    123,565.02x = 170,537.92 × 78,247.14
  4. Step 4: Simplify right side
    123,565.02x = 13,344,104,501.55
  5. Step 5: Solve for x
    x = 13,344,104,501.55/123,565.02
  6. Step 6: Final answer
    x = 107,992.57

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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.