Home / 123,171.81-169,964.39-90,923.58

Finding the Fourth Proportional to 123,171.81, 169,964.39 and 90,923.58

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Solution

The fourth proportional to 123,171.81, 169,964.39 and 90,923.58 is: 125,465.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,171.81 : 169,964.39 = 90,923.58 : x
  2. Step 2: Convert to fraction form
    123,171.81/169,964.39 = 90,923.58/x
  3. Step 3: Cross multiply
    123,171.81x = 169,964.39 × 90,923.58
  4. Step 4: Simplify right side
    123,171.81x = 15,453,771,038.63
  5. Step 5: Solve for x
    x = 15,453,771,038.63/123,171.81
  6. Step 6: Final answer
    x = 125,465.17

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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.