Home / 100,784.54-139,088.41-57,771.19

Finding the Fourth Proportional to 100,784.54, 139,088.41 and 57,771.19

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Solution

The fourth proportional to 100,784.54, 139,088.41 and 57,771.19 is: 79,727.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,784.54 : 139,088.41 = 57,771.19 : x
  2. Step 2: Convert to fraction form
    100,784.54/139,088.41 = 57,771.19/x
  3. Step 3: Cross multiply
    100,784.54x = 139,088.41 × 57,771.19
  4. Step 4: Simplify right side
    100,784.54x = 8,035,302,990.34
  5. Step 5: Solve for x
    x = 8,035,302,990.34/100,784.54
  6. Step 6: Final answer
    x = 79,727.54

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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.