Home / 114,911.20-172,366.80-102,858.40

Finding the Fourth Proportional to 114,911.20, 172,366.80 and 102,858.40

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Solution

The fourth proportional to 114,911.20, 172,366.80 and 102,858.40 is: 154,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,911.20 : 172,366.80 = 102,858.40 : x
  2. Step 2: Convert to fraction form
    114,911.20/172,366.80 = 102,858.40/x
  3. Step 3: Cross multiply
    114,911.20x = 172,366.80 × 102,858.40
  4. Step 4: Simplify right side
    114,911.20x = 17,729,373,261.12
  5. Step 5: Solve for x
    x = 17,729,373,261.12/114,911.20
  6. Step 6: Final answer
    x = 154,287.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.