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Finding the Fourth Proportional to 163,603.80, 245,276.10 and 89,731.80

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Solution

The fourth proportional to 163,603.80, 245,276.10 and 89,731.80 is: 134,526.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,603.80 : 245,276.10 = 89,731.80 : x
  2. Step 2: Convert to fraction form
    163,603.80/245,276.10 = 89,731.80/x
  3. Step 3: Cross multiply
    163,603.80x = 245,276.10 × 89,731.80
  4. Step 4: Simplify right side
    163,603.80x = 22,009,065,949.98
  5. Step 5: Solve for x
    x = 22,009,065,949.98/163,603.80
  6. Step 6: Final answer
    x = 134,526.62

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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.