Home / 143,068.47-197,399.39-85,717.12

Finding the Fourth Proportional to 143,068.47, 197,399.39 and 85,717.12

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Solution

The fourth proportional to 143,068.47, 197,399.39 and 85,717.12 is: 118,268.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,068.47 : 197,399.39 = 85,717.12 : x
  2. Step 2: Convert to fraction form
    143,068.47/197,399.39 = 85,717.12/x
  3. Step 3: Cross multiply
    143,068.47x = 197,399.39 × 85,717.12
  4. Step 4: Simplify right side
    143,068.47x = 16,920,507,200.56
  5. Step 5: Solve for x
    x = 16,920,507,200.56/143,068.47
  6. Step 6: Final answer
    x = 118,268.60

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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.