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Finding the Fourth Proportional to 99,608.80, 149,494.80 and 98,831.20

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Solution

The fourth proportional to 99,608.80, 149,494.80 and 98,831.20 is: 148,327.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,608.80 : 149,494.80 = 98,831.20 : x
  2. Step 2: Convert to fraction form
    99,608.80/149,494.80 = 98,831.20/x
  3. Step 3: Cross multiply
    99,608.80x = 149,494.80 × 98,831.20
  4. Step 4: Simplify right side
    99,608.80x = 14,774,750,477.76
  5. Step 5: Solve for x
    x = 14,774,750,477.76/99,608.80
  6. Step 6: Final answer
    x = 148,327.76

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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.