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Finding the Fourth Proportional to 163,688.80, 245,533.20 and 101,480.80

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Solution

The fourth proportional to 163,688.80, 245,533.20 and 101,480.80 is: 152,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,688.80 : 245,533.20 = 101,480.80 : x
  2. Step 2: Convert to fraction form
    163,688.80/245,533.20 = 101,480.80/x
  3. Step 3: Cross multiply
    163,688.80x = 245,533.20 × 101,480.80
  4. Step 4: Simplify right side
    163,688.80x = 24,916,905,562.56
  5. Step 5: Solve for x
    x = 24,916,905,562.56/163,688.80
  6. Step 6: Final answer
    x = 152,221.20

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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.