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Finding the Fourth Proportional to 170,993.04, 256,577.04 and 77,486.64

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Solution

The fourth proportional to 170,993.04, 256,577.04 and 77,486.64 is: 116,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,993.04 : 256,577.04 = 77,486.64 : x
  2. Step 2: Convert to fraction form
    170,993.04/256,577.04 = 77,486.64/x
  3. Step 3: Cross multiply
    170,993.04x = 256,577.04 × 77,486.64
  4. Step 4: Simplify right side
    170,993.04x = 19,881,292,730.75
  5. Step 5: Solve for x
    x = 19,881,292,730.75/170,993.04
  6. Step 6: Final answer
    x = 116,269.60

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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.