Home / 120,318.69-166,039.16-65,875.80

Finding the Fourth Proportional to 120,318.69, 166,039.16 and 65,875.80

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Solution

The fourth proportional to 120,318.69, 166,039.16 and 65,875.80 is: 90,908.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,318.69 : 166,039.16 = 65,875.80 : x
  2. Step 2: Convert to fraction form
    120,318.69/166,039.16 = 65,875.80/x
  3. Step 3: Cross multiply
    120,318.69x = 166,039.16 × 65,875.80
  4. Step 4: Simplify right side
    120,318.69x = 10,937,962,496.33
  5. Step 5: Solve for x
    x = 10,937,962,496.33/120,318.69
  6. Step 6: Final answer
    x = 90,908.26

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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.