Home / 128,433.22-177,244.73-71,841.22

Finding the Fourth Proportional to 128,433.22, 177,244.73 and 71,841.22

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Solution

The fourth proportional to 128,433.22, 177,244.73 and 71,841.22 is: 99,144.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,433.22 : 177,244.73 = 71,841.22 : x
  2. Step 2: Convert to fraction form
    128,433.22/177,244.73 = 71,841.22/x
  3. Step 3: Cross multiply
    128,433.22x = 177,244.73 × 71,841.22
  4. Step 4: Simplify right side
    128,433.22x = 12,733,477,641.77
  5. Step 5: Solve for x
    x = 12,733,477,641.77/128,433.22
  6. Step 6: Final answer
    x = 99,144.74

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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.