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Finding the Fourth Proportional to 131,574.62, 181,562 and 74,210.78

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Solution

The fourth proportional to 131,574.62, 181,562 and 74,210.78 is: 102,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,574.62 : 181,562 = 74,210.78 : x
  2. Step 2: Convert to fraction form
    131,574.62/181,562 = 74,210.78/x
  3. Step 3: Cross multiply
    131,574.62x = 181,562 × 74,210.78
  4. Step 4: Simplify right side
    131,574.62x = 13,473,857,638.36
  5. Step 5: Solve for x
    x = 13,473,857,638.36/131,574.62
  6. Step 6: Final answer
    x = 102,404.69

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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.