Home / 123,379.08-170,263.50-66,790.32

Finding the Fourth Proportional to 123,379.08, 170,263.50 and 66,790.32

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Solution

The fourth proportional to 123,379.08, 170,263.50 and 66,790.32 is: 92,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,379.08 : 170,263.50 = 66,790.32 : x
  2. Step 2: Convert to fraction form
    123,379.08/170,263.50 = 66,790.32/x
  3. Step 3: Cross multiply
    123,379.08x = 170,263.50 × 66,790.32
  4. Step 4: Simplify right side
    123,379.08x = 11,371,953,649.32
  5. Step 5: Solve for x
    x = 11,371,953,649.32/123,379.08
  6. Step 6: Final answer
    x = 92,170.84

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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.