Home / 123,495.11-170,421.03-69,778.98

Finding the Fourth Proportional to 123,495.11, 170,421.03 and 69,778.98

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Solution

The fourth proportional to 123,495.11, 170,421.03 and 69,778.98 is: 96,293.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,495.11 : 170,421.03 = 69,778.98 : x
  2. Step 2: Convert to fraction form
    123,495.11/170,421.03 = 69,778.98/x
  3. Step 3: Cross multiply
    123,495.11x = 170,421.03 × 69,778.98
  4. Step 4: Simplify right side
    123,495.11x = 11,891,805,643.95
  5. Step 5: Solve for x
    x = 11,891,805,643.95/123,495.11
  6. Step 6: Final answer
    x = 96,293.74

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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.