Home / 123,240.40-170,071.13-68,789.45

Finding the Fourth Proportional to 123,240.40, 170,071.13 and 68,789.45

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Solution

The fourth proportional to 123,240.40, 170,071.13 and 68,789.45 is: 94,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,240.40 : 170,071.13 = 68,789.45 : x
  2. Step 2: Convert to fraction form
    123,240.40/170,071.13 = 68,789.45/x
  3. Step 3: Cross multiply
    123,240.40x = 170,071.13 × 68,789.45
  4. Step 4: Simplify right side
    123,240.40x = 11,699,100,090.73
  5. Step 5: Solve for x
    x = 11,699,100,090.73/123,240.40
  6. Step 6: Final answer
    x = 94,929.10

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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.