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Finding the Fourth Proportional to 98,890.40, 148,335.60 and 98,234.30

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Solution

The fourth proportional to 98,890.40, 148,335.60 and 98,234.30 is: 147,351.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,890.40 : 148,335.60 = 98,234.30 : x
  2. Step 2: Convert to fraction form
    98,890.40/148,335.60 = 98,234.30/x
  3. Step 3: Cross multiply
    98,890.40x = 148,335.60 × 98,234.30
  4. Step 4: Simplify right side
    98,890.40x = 14,571,643,831.08
  5. Step 5: Solve for x
    x = 14,571,643,831.08/98,890.40
  6. Step 6: Final answer
    x = 147,351.45

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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.