Home / 123,345.07-170,216.19-66,756.44

Finding the Fourth Proportional to 123,345.07, 170,216.19 and 66,756.44

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Solution

The fourth proportional to 123,345.07, 170,216.19 and 66,756.44 is: 92,123.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,345.07 : 170,216.19 = 66,756.44 : x
  2. Step 2: Convert to fraction form
    123,345.07/170,216.19 = 66,756.44/x
  3. Step 3: Cross multiply
    123,345.07x = 170,216.19 × 66,756.44
  4. Step 4: Simplify right side
    123,345.07x = 11,363,027,300.30
  5. Step 5: Solve for x
    x = 11,363,027,300.30/123,345.07
  6. Step 6: Final answer
    x = 92,123.89

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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.