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Finding the Fourth Proportional to 115,210.80, 172,956.60 and 73,090.80

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Solution

The fourth proportional to 115,210.80, 172,956.60 and 73,090.80 is: 109,725.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,210.80 : 172,956.60 = 73,090.80 : x
  2. Step 2: Convert to fraction form
    115,210.80/172,956.60 = 73,090.80/x
  3. Step 3: Cross multiply
    115,210.80x = 172,956.60 × 73,090.80
  4. Step 4: Simplify right side
    115,210.80x = 12,641,536,259.28
  5. Step 5: Solve for x
    x = 12,641,536,259.28/115,210.80
  6. Step 6: Final answer
    x = 109,725.27

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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.