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Finding the Fourth Proportional to 163,920.80, 245,881.20 and 149,405.60

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Solution

The fourth proportional to 163,920.80, 245,881.20 and 149,405.60 is: 224,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,920.80 : 245,881.20 = 149,405.60 : x
  2. Step 2: Convert to fraction form
    163,920.80/245,881.20 = 149,405.60/x
  3. Step 3: Cross multiply
    163,920.80x = 245,881.20 × 149,405.60
  4. Step 4: Simplify right side
    163,920.80x = 36,736,028,214.72
  5. Step 5: Solve for x
    x = 36,736,028,214.72/163,920.80
  6. Step 6: Final answer
    x = 224,108.40

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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.