Home / 143,806.16-198,504.60-87,216.32

Finding the Fourth Proportional to 143,806.16, 198,504.60 and 87,216.32

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Solution

The fourth proportional to 143,806.16, 198,504.60 and 87,216.32 is: 120,390.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,806.16 : 198,504.60 = 87,216.32 : x
  2. Step 2: Convert to fraction form
    143,806.16/198,504.60 = 87,216.32/x
  3. Step 3: Cross multiply
    143,806.16x = 198,504.60 × 87,216.32
  4. Step 4: Simplify right side
    143,806.16x = 17,312,840,715.07
  5. Step 5: Solve for x
    x = 17,312,840,715.07/143,806.16
  6. Step 6: Final answer
    x = 120,390.12

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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.