Home / 123,228.40-170,055.72-66,640.24

Finding the Fourth Proportional to 123,228.40, 170,055.72 and 66,640.24

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Solution

The fourth proportional to 123,228.40, 170,055.72 and 66,640.24 is: 91,963.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,228.40 : 170,055.72 = 66,640.24 : x
  2. Step 2: Convert to fraction form
    123,228.40/170,055.72 = 66,640.24/x
  3. Step 3: Cross multiply
    123,228.40x = 170,055.72 × 66,640.24
  4. Step 4: Simplify right side
    123,228.40x = 11,332,553,994.17
  5. Step 5: Solve for x
    x = 11,332,553,994.17/123,228.40
  6. Step 6: Final answer
    x = 91,963.82

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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.