Home / 98,664.72-147,958.20-57,140.88

Finding the Fourth Proportional to 98,664.72, 147,958.20 and 57,140.88

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Solution

The fourth proportional to 98,664.72, 147,958.20 and 57,140.88 is: 85,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,664.72 : 147,958.20 = 57,140.88 : x
  2. Step 2: Convert to fraction form
    98,664.72/147,958.20 = 57,140.88/x
  3. Step 3: Cross multiply
    98,664.72x = 147,958.20 × 57,140.88
  4. Step 4: Simplify right side
    98,664.72x = 8,454,461,751.22
  5. Step 5: Solve for x
    x = 8,454,461,751.22/98,664.72
  6. Step 6: Final answer
    x = 85,688.80

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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.