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Finding the Fourth Proportional to 131,304, 181,206.08 and 74,720.64

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Solution

The fourth proportional to 131,304, 181,206.08 and 74,720.64 is: 103,118.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,304 : 181,206.08 = 74,720.64 : x
  2. Step 2: Convert to fraction form
    131,304/181,206.08 = 74,720.64/x
  3. Step 3: Cross multiply
    131,304x = 181,206.08 × 74,720.64
  4. Step 4: Simplify right side
    131,304x = 13,539,834,269.49
  5. Step 5: Solve for x
    x = 13,539,834,269.49/131,304
  6. Step 6: Final answer
    x = 103,118.22

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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.