Home / 142,842.57-197,110.37-81,588.47

Finding the Fourth Proportional to 142,842.57, 197,110.37 and 81,588.47

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Solution

The fourth proportional to 142,842.57, 197,110.37 and 81,588.47 is: 112,585.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,842.57 : 197,110.37 = 81,588.47 : x
  2. Step 2: Convert to fraction form
    142,842.57/197,110.37 = 81,588.47/x
  3. Step 3: Cross multiply
    142,842.57x = 197,110.37 × 81,588.47
  4. Step 4: Simplify right side
    142,842.57x = 16,081,932,115.94
  5. Step 5: Solve for x
    x = 16,081,932,115.94/142,842.57
  6. Step 6: Final answer
    x = 112,585.01

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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.