Home / 98,133.60-147,085.20-45,431.76

Finding the Fourth Proportional to 98,133.60, 147,085.20 and 45,431.76

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Solution

The fourth proportional to 98,133.60, 147,085.20 and 45,431.76 is: 68,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,133.60 : 147,085.20 = 45,431.76 : x
  2. Step 2: Convert to fraction form
    98,133.60/147,085.20 = 45,431.76/x
  3. Step 3: Cross multiply
    98,133.60x = 147,085.20 × 45,431.76
  4. Step 4: Simplify right side
    98,133.60x = 6,682,339,505.95
  5. Step 5: Solve for x
    x = 6,682,339,505.95/98,133.60
  6. Step 6: Final answer
    x = 68,094.31

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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.