Home / 91,895.36-126,421.90-87,958.76

Finding the Fourth Proportional to 91,895.36, 126,421.90 and 87,958.76

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Solution

The fourth proportional to 91,895.36, 126,421.90 and 87,958.76 is: 121,006.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,895.36 : 126,421.90 = 87,958.76 : x
  2. Step 2: Convert to fraction form
    91,895.36/126,421.90 = 87,958.76/x
  3. Step 3: Cross multiply
    91,895.36x = 126,421.90 × 87,958.76
  4. Step 4: Simplify right side
    91,895.36x = 11,119,912,708.84
  5. Step 5: Solve for x
    x = 11,119,912,708.84/91,895.36
  6. Step 6: Final answer
    x = 121,006.25

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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.