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Finding the Fourth Proportional to 111,530.80, 153,912.64 and 60,543.52

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Solution

The fourth proportional to 111,530.80, 153,912.64 and 60,543.52 is: 83,550.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,530.80 : 153,912.64 = 60,543.52 : x
  2. Step 2: Convert to fraction form
    111,530.80/153,912.64 = 60,543.52/x
  3. Step 3: Cross multiply
    111,530.80x = 153,912.64 × 60,543.52
  4. Step 4: Simplify right side
    111,530.80x = 9,318,412,998.09
  5. Step 5: Solve for x
    x = 9,318,412,998.09/111,530.80
  6. Step 6: Final answer
    x = 83,550.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.