Home / 123,494.07-170,422.63-66,905.45

Finding the Fourth Proportional to 123,494.07, 170,422.63 and 66,905.45

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Solution

The fourth proportional to 123,494.07, 170,422.63 and 66,905.45 is: 92,329.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,494.07 : 170,422.63 = 66,905.45 : x
  2. Step 2: Convert to fraction form
    123,494.07/170,422.63 = 66,905.45/x
  3. Step 3: Cross multiply
    123,494.07x = 170,422.63 × 66,905.45
  4. Step 4: Simplify right side
    123,494.07x = 11,402,201,898.22
  5. Step 5: Solve for x
    x = 11,402,201,898.22/123,494.07
  6. Step 6: Final answer
    x = 92,329.95

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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.