Home / 98,735.40-148,137.66-28,618.92

Finding the Fourth Proportional to 98,735.40, 148,137.66 and 28,618.92

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Solution

The fourth proportional to 98,735.40, 148,137.66 and 28,618.92 is: 42,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,735.40 : 148,137.66 = 28,618.92 : x
  2. Step 2: Convert to fraction form
    98,735.40/148,137.66 = 28,618.92/x
  3. Step 3: Cross multiply
    98,735.40x = 148,137.66 × 28,618.92
  4. Step 4: Simplify right side
    98,735.40x = 4,239,539,840.53
  5. Step 5: Solve for x
    x = 4,239,539,840.53/98,735.40
  6. Step 6: Final answer
    x = 42,938.40

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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.