Home / 150,109.36-207,117-89,668.18

Finding the Fourth Proportional to 150,109.36, 207,117 and 89,668.18

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Solution

The fourth proportional to 150,109.36, 207,117 and 89,668.18 is: 123,721.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,109.36 : 207,117 = 89,668.18 : x
  2. Step 2: Convert to fraction form
    150,109.36/207,117 = 89,668.18/x
  3. Step 3: Cross multiply
    150,109.36x = 207,117 × 89,668.18
  4. Step 4: Simplify right side
    150,109.36x = 18,571,804,437.06
  5. Step 5: Solve for x
    x = 18,571,804,437.06/150,109.36
  6. Step 6: Final answer
    x = 123,721.83

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Double scale
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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.