Home / 128,683.08-177,584.40-72,093.24

Finding the Fourth Proportional to 128,683.08, 177,584.40 and 72,093.24

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Solution

The fourth proportional to 128,683.08, 177,584.40 and 72,093.24 is: 99,489.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,683.08 : 177,584.40 = 72,093.24 : x
  2. Step 2: Convert to fraction form
    128,683.08/177,584.40 = 72,093.24/x
  3. Step 3: Cross multiply
    128,683.08x = 177,584.40 × 72,093.24
  4. Step 4: Simplify right side
    128,683.08x = 12,802,634,769.46
  5. Step 5: Solve for x
    x = 12,802,634,769.46/128,683.08
  6. Step 6: Final answer
    x = 99,489.65

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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.