Home / 88,189.11-121,654.33-55,866.71

Finding the Fourth Proportional to 88,189.11, 121,654.33 and 55,866.71

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Solution

The fourth proportional to 88,189.11, 121,654.33 and 55,866.71 is: 77,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,189.11 : 121,654.33 = 55,866.71 : x
  2. Step 2: Convert to fraction form
    88,189.11/121,654.33 = 55,866.71/x
  3. Step 3: Cross multiply
    88,189.11x = 121,654.33 × 55,866.71
  4. Step 4: Simplify right side
    88,189.11x = 6,796,427,495.95
  5. Step 5: Solve for x
    x = 6,796,427,495.95/88,189.11
  6. Step 6: Final answer
    x = 77,066.51

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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.