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Finding the Fourth Proportional to 161,980.80, 243,045.04 and 83,150.43

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Solution

The fourth proportional to 161,980.80, 243,045.04 and 83,150.43 is: 124,763.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,980.80 : 243,045.04 = 83,150.43 : x
  2. Step 2: Convert to fraction form
    161,980.80/243,045.04 = 83,150.43/x
  3. Step 3: Cross multiply
    161,980.80x = 243,045.04 × 83,150.43
  4. Step 4: Simplify right side
    161,980.80x = 20,209,299,585.37
  5. Step 5: Solve for x
    x = 20,209,299,585.37/161,980.80
  6. Step 6: Final answer
    x = 124,763.55

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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.