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Finding the Fourth Proportional to 158,988.69, 219,313.04 and 99,269.01

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Solution

The fourth proportional to 158,988.69, 219,313.04 and 99,269.01 is: 136,934.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,988.69 : 219,313.04 = 99,269.01 : x
  2. Step 2: Convert to fraction form
    158,988.69/219,313.04 = 99,269.01/x
  3. Step 3: Cross multiply
    158,988.69x = 219,313.04 × 99,269.01
  4. Step 4: Simplify right side
    158,988.69x = 21,770,987,864.55
  5. Step 5: Solve for x
    x = 21,770,987,864.55/158,988.69
  6. Step 6: Final answer
    x = 136,934.19

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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.