Home / 103,057.74-142,187.40-57,729.60

Finding the Fourth Proportional to 103,057.74, 142,187.40 and 57,729.60

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Solution

The fourth proportional to 103,057.74, 142,187.40 and 57,729.60 is: 79,648.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,057.74 : 142,187.40 = 57,729.60 : x
  2. Step 2: Convert to fraction form
    103,057.74/142,187.40 = 57,729.60/x
  3. Step 3: Cross multiply
    103,057.74x = 142,187.40 × 57,729.60
  4. Step 4: Simplify right side
    103,057.74x = 8,208,421,727.04
  5. Step 5: Solve for x
    x = 8,208,421,727.04/103,057.74
  6. Step 6: Final answer
    x = 79,648.77

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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.