Home / 98,428.90-147,708.49-54,086.53

Finding the Fourth Proportional to 98,428.90, 147,708.49 and 54,086.53

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Solution

The fourth proportional to 98,428.90, 147,708.49 and 54,086.53 is: 81,165.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,428.90 : 147,708.49 = 54,086.53 : x
  2. Step 2: Convert to fraction form
    98,428.90/147,708.49 = 54,086.53/x
  3. Step 3: Cross multiply
    98,428.90x = 147,708.49 × 54,086.53
  4. Step 4: Simplify right side
    98,428.90x = 7,989,039,927.88
  5. Step 5: Solve for x
    x = 7,989,039,927.88/98,428.90
  6. Step 6: Final answer
    x = 81,165.59

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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.