Home / 145,014.09-200,120.81-81,353.26

Finding the Fourth Proportional to 145,014.09, 200,120.81 and 81,353.26

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Solution

The fourth proportional to 145,014.09, 200,120.81 and 81,353.26 is: 112,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,014.09 : 200,120.81 = 81,353.26 : x
  2. Step 2: Convert to fraction form
    145,014.09/200,120.81 = 81,353.26/x
  3. Step 3: Cross multiply
    145,014.09x = 200,120.81 × 81,353.26
  4. Step 4: Simplify right side
    145,014.09x = 16,280,480,287.34
  5. Step 5: Solve for x
    x = 16,280,480,287.34/145,014.09
  6. Step 6: Final answer
    x = 112,268.27

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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.