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Finding the Fourth Proportional to 158,407.98, 218,591.64 and 86,776.44

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Solution

The fourth proportional to 158,407.98, 218,591.64 and 86,776.44 is: 119,745.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,407.98 : 218,591.64 = 86,776.44 : x
  2. Step 2: Convert to fraction form
    158,407.98/218,591.64 = 86,776.44/x
  3. Step 3: Cross multiply
    158,407.98x = 218,591.64 × 86,776.44
  4. Step 4: Simplify right side
    158,407.98x = 18,968,604,332.96
  5. Step 5: Solve for x
    x = 18,968,604,332.96/158,407.98
  6. Step 6: Final answer
    x = 119,745.26

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1.5x scale

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.