Home / 91,237.05-125,843.76-83,708.30

Finding the Fourth Proportional to 91,237.05, 125,843.76 and 83,708.30

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Solution

The fourth proportional to 91,237.05, 125,843.76 and 83,708.30 is: 115,459.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,237.05 : 125,843.76 = 83,708.30 : x
  2. Step 2: Convert to fraction form
    91,237.05/125,843.76 = 83,708.30/x
  3. Step 3: Cross multiply
    91,237.05x = 125,843.76 × 83,708.30
  4. Step 4: Simplify right side
    91,237.05x = 10,534,167,529.82
  5. Step 5: Solve for x
    x = 10,534,167,529.82/91,237.05
  6. Step 6: Final answer
    x = 115,459.32

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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.