Home / 138,057.36-190,425.50-89,572.66

Finding the Fourth Proportional to 138,057.36, 190,425.50 and 89,572.66

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Solution

The fourth proportional to 138,057.36, 190,425.50 and 89,572.66 is: 123,549.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,057.36 : 190,425.50 = 89,572.66 : x
  2. Step 2: Convert to fraction form
    138,057.36/190,425.50 = 89,572.66/x
  3. Step 3: Cross multiply
    138,057.36x = 190,425.50 × 89,572.66
  4. Step 4: Simplify right side
    138,057.36x = 17,056,918,960.49
  5. Step 5: Solve for x
    x = 17,056,918,960.49/138,057.36
  6. Step 6: Final answer
    x = 123,549.51

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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.