Home / 78,161.64-116,813.34-57,145.92

Finding the Fourth Proportional to 78,161.64, 116,813.34 and 57,145.92

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Solution

The fourth proportional to 78,161.64, 116,813.34 and 57,145.92 is: 85,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,161.64 : 116,813.34 = 57,145.92 : x
  2. Step 2: Convert to fraction form
    78,161.64/116,813.34 = 57,145.92/x
  3. Step 3: Cross multiply
    78,161.64x = 116,813.34 × 57,145.92
  4. Step 4: Simplify right side
    78,161.64x = 6,675,405,782.57
  5. Step 5: Solve for x
    x = 6,675,405,782.57/78,161.64
  6. Step 6: Final answer
    x = 85,405.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.