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Finding the Fourth Proportional to 98,750.60, 148,125.90 and 63,321.20

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Solution

The fourth proportional to 98,750.60, 148,125.90 and 63,321.20 is: 94,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,750.60 : 148,125.90 = 63,321.20 : x
  2. Step 2: Convert to fraction form
    98,750.60/148,125.90 = 63,321.20/x
  3. Step 3: Cross multiply
    98,750.60x = 148,125.90 × 63,321.20
  4. Step 4: Simplify right side
    98,750.60x = 9,379,509,739.08
  5. Step 5: Solve for x
    x = 9,379,509,739.08/98,750.60
  6. Step 6: Final answer
    x = 94,981.80

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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.