Home / 155,940.25-215,197.40-84,320.10

Finding the Fourth Proportional to 155,940.25, 215,197.40 and 84,320.10

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Solution

The fourth proportional to 155,940.25, 215,197.40 and 84,320.10 is: 116,361.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,940.25 : 215,197.40 = 84,320.10 : x
  2. Step 2: Convert to fraction form
    155,940.25/215,197.40 = 84,320.10/x
  3. Step 3: Cross multiply
    155,940.25x = 215,197.40 × 84,320.10
  4. Step 4: Simplify right side
    155,940.25x = 18,145,465,866.14
  5. Step 5: Solve for x
    x = 18,145,465,866.14/155,940.25
  6. Step 6: Final answer
    x = 116,361.66

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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.