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Finding the Fourth Proportional to 163,561.20, 245,349.90 and 84,829.20

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Solution

The fourth proportional to 163,561.20, 245,349.90 and 84,829.20 is: 127,248.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,561.20 : 245,349.90 = 84,829.20 : x
  2. Step 2: Convert to fraction form
    163,561.20/245,349.90 = 84,829.20/x
  3. Step 3: Cross multiply
    163,561.20x = 245,349.90 × 84,829.20
  4. Step 4: Simplify right side
    163,561.20x = 20,812,835,737.08
  5. Step 5: Solve for x
    x = 20,812,835,737.08/163,561.20
  6. Step 6: Final answer
    x = 127,248.00

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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.