Home / 98,215.90-135,538.89-55,774.73

Finding the Fourth Proportional to 98,215.90, 135,538.89 and 55,774.73

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Solution

The fourth proportional to 98,215.90, 135,538.89 and 55,774.73 is: 76,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,215.90 : 135,538.89 = 55,774.73 : x
  2. Step 2: Convert to fraction form
    98,215.90/135,538.89 = 55,774.73/x
  3. Step 3: Cross multiply
    98,215.90x = 135,538.89 × 55,774.73
  4. Step 4: Simplify right side
    98,215.90x = 7,559,645,123.94
  5. Step 5: Solve for x
    x = 7,559,645,123.94/98,215.90
  6. Step 6: Final answer
    x = 76,969.67

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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.