Home / 158,163.10-218,268.61-86,543.10

Finding the Fourth Proportional to 158,163.10, 218,268.61 and 86,543.10

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Solution

The fourth proportional to 158,163.10, 218,268.61 and 86,543.10 is: 119,431.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,163.10 : 218,268.61 = 86,543.10 : x
  2. Step 2: Convert to fraction form
    158,163.10/218,268.61 = 86,543.10/x
  3. Step 3: Cross multiply
    158,163.10x = 218,268.61 × 86,543.10
  4. Step 4: Simplify right side
    158,163.10x = 18,889,641,925.73
  5. Step 5: Solve for x
    x = 18,889,641,925.73/158,163.10
  6. Step 6: Final answer
    x = 119,431.41

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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.