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Finding the Fourth Proportional to 170,994.04, 256,578.54 and 77,487.64

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Solution

The fourth proportional to 170,994.04, 256,578.54 and 77,487.64 is: 116,271.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,994.04 : 256,578.54 = 77,487.64 : x
  2. Step 2: Convert to fraction form
    170,994.04/256,578.54 = 77,487.64/x
  3. Step 3: Cross multiply
    170,994.04x = 256,578.54 × 77,487.64
  4. Step 4: Simplify right side
    170,994.04x = 19,881,665,539.25
  5. Step 5: Solve for x
    x = 19,881,665,539.25/170,994.04
  6. Step 6: Final answer
    x = 116,271.10

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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.