Home / 128,688.45-193,029.93-35,194.20

Finding the Fourth Proportional to 128,688.45, 193,029.93 and 35,194.20

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Solution

The fourth proportional to 128,688.45, 193,029.93 and 35,194.20 is: 52,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,688.45 : 193,029.93 = 35,194.20 : x
  2. Step 2: Convert to fraction form
    128,688.45/193,029.93 = 35,194.20/x
  3. Step 3: Cross multiply
    128,688.45x = 193,029.93 × 35,194.20
  4. Step 4: Simplify right side
    128,688.45x = 6,793,533,962.41
  5. Step 5: Solve for x
    x = 6,793,533,962.41/128,688.45
  6. Step 6: Final answer
    x = 52,790.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.