Home / 88,189.38-121,654.70-55,866.98

Finding the Fourth Proportional to 88,189.38, 121,654.70 and 55,866.98

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Solution

The fourth proportional to 88,189.38, 121,654.70 and 55,866.98 is: 77,066.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,189.38 : 121,654.70 = 55,866.98 : x
  2. Step 2: Convert to fraction form
    88,189.38/121,654.70 = 55,866.98/x
  3. Step 3: Cross multiply
    88,189.38x = 121,654.70 × 55,866.98
  4. Step 4: Simplify right side
    88,189.38x = 6,796,479,804.20
  5. Step 5: Solve for x
    x = 6,796,479,804.20/88,189.38
  6. Step 6: Final answer
    x = 77,066.87

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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.