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Finding the Fourth Proportional to 170,703.60, 256,055.40 and 82,130.10

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Solution

The fourth proportional to 170,703.60, 256,055.40 and 82,130.10 is: 123,195.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,703.60 : 256,055.40 = 82,130.10 : x
  2. Step 2: Convert to fraction form
    170,703.60/256,055.40 = 82,130.10/x
  3. Step 3: Cross multiply
    170,703.60x = 256,055.40 × 82,130.10
  4. Step 4: Simplify right side
    170,703.60x = 21,029,855,607.54
  5. Step 5: Solve for x
    x = 21,029,855,607.54/170,703.60
  6. Step 6: Final answer
    x = 123,195.15

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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.