Home / 98,320.12-147,489.80-39,142

Finding the Fourth Proportional to 98,320.12, 147,489.80 and 39,142

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Solution

The fourth proportional to 98,320.12, 147,489.80 and 39,142 is: 58,716.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,320.12 : 147,489.80 = 39,142 : x
  2. Step 2: Convert to fraction form
    98,320.12/147,489.80 = 39,142/x
  3. Step 3: Cross multiply
    98,320.12x = 147,489.80 × 39,142
  4. Step 4: Simplify right side
    98,320.12x = 5,773,045,751.60
  5. Step 5: Solve for x
    x = 5,773,045,751.60/98,320.12
  6. Step 6: Final answer
    x = 58,716.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.