Home / 142,032.08-196,010.08-81,621.68

Finding the Fourth Proportional to 142,032.08, 196,010.08 and 81,621.68

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Solution

The fourth proportional to 142,032.08, 196,010.08 and 81,621.68 is: 112,641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,032.08 : 196,010.08 = 81,621.68 : x
  2. Step 2: Convert to fraction form
    142,032.08/196,010.08 = 81,621.68/x
  3. Step 3: Cross multiply
    142,032.08x = 196,010.08 × 81,621.68
  4. Step 4: Simplify right side
    142,032.08x = 15,998,670,842.43
  5. Step 5: Solve for x
    x = 15,998,670,842.43/142,032.08
  6. Step 6: Final answer
    x = 112,641.25

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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.