Home / 112,889.25-155,659.47-71,998.68

Finding the Fourth Proportional to 112,889.25, 155,659.47 and 71,998.68

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Solution

The fourth proportional to 112,889.25, 155,659.47 and 71,998.68 is: 99,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,889.25 : 155,659.47 = 71,998.68 : x
  2. Step 2: Convert to fraction form
    112,889.25/155,659.47 = 71,998.68/x
  3. Step 3: Cross multiply
    112,889.25x = 155,659.47 × 71,998.68
  4. Step 4: Simplify right side
    112,889.25x = 11,207,276,369.50
  5. Step 5: Solve for x
    x = 11,207,276,369.50/112,889.25
  6. Step 6: Final answer
    x = 99,276.74

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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.