Home / 170,187.60-255,281.40-81,420.24

Finding the Fourth Proportional to 170,187.60, 255,281.40 and 81,420.24

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Solution

The fourth proportional to 170,187.60, 255,281.40 and 81,420.24 is: 122,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,187.60 : 255,281.40 = 81,420.24 : x
  2. Step 2: Convert to fraction form
    170,187.60/255,281.40 = 81,420.24/x
  3. Step 3: Cross multiply
    170,187.60x = 255,281.40 × 81,420.24
  4. Step 4: Simplify right side
    170,187.60x = 20,785,072,855.54
  5. Step 5: Solve for x
    x = 20,785,072,855.54/170,187.60
  6. Step 6: Final answer
    x = 122,130.36

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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.