Home / 123,137.21-169,938.10-69,427.23

Finding the Fourth Proportional to 123,137.21, 169,938.10 and 69,427.23

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Solution

The fourth proportional to 123,137.21, 169,938.10 and 69,427.23 is: 95,814.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,137.21 : 169,938.10 = 69,427.23 : x
  2. Step 2: Convert to fraction form
    123,137.21/169,938.10 = 69,427.23/x
  3. Step 3: Cross multiply
    123,137.21x = 169,938.10 × 69,427.23
  4. Step 4: Simplify right side
    123,137.21x = 11,798,331,003.98
  5. Step 5: Solve for x
    x = 11,798,331,003.98/123,137.21
  6. Step 6: Final answer
    x = 95,814.50

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1.5x scale

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.